diff --git a/mindinsight/domain/graph/pb_parser.py b/mindinsight/domain/graph/pb_parser.py
new file mode 100644
index 00000000..2822c035
--- /dev/null
+++ b/mindinsight/domain/graph/pb_parser.py
@@ -0,0 +1,406 @@
+# Copyright 2021 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+"""PB parser module."""
+
+from mindinsight.domain.graph.proto import ms_graph_pb2 as graph_proto
+from mindinsight.domain.graph.base import MindSporeType, InputType, OutputType
+from mindinsight.domain.graph.base import Input, Output, Tensor, Source, Constant, Parameter, Operator, Parser
+from mindinsight.domain.graph.exceptions import UnknownDataTypeError, TupleGetitemIndexError
+
+
+class PBParser(Parser):
+    """Protobuf file parser."""
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        self.proto = graph_proto
+        self.dtype_mapping = {
+            self.proto.DT_BOOL: 'bool',
+            self.proto.DT_INT8: 'int8',
+            self.proto.DT_INT16: 'int16',
+            self.proto.DT_INT32: 'int32',
+            self.proto.DT_INT64: 'int64',
+            self.proto.DT_UINT8: 'uint8',
+            self.proto.DT_UINT16: 'uint16',
+            self.proto.DT_UINT32: 'uint32',
+            self.proto.DT_UINT64: 'uint64',
+            self.proto.DT_FLOAT16: 'float16',
+            self.proto.DT_FLOAT32: 'float32',
+            self.proto.DT_FLOAT64: 'float64',
+            self.proto.DT_TENSOR: 'tensor',
+            self.proto.DT_TUPLE: 'tuple',
+            self.proto.DT_BASE_INT: MindSporeType.INT,
+            self.proto.DT_BASE_UINT: MindSporeType.UINT,
+            self.proto.DT_BASE_FLOAT: MindSporeType.FLOAT,
+        }
+        self.int_types = (
+            self.proto.DT_INT8,
+            self.proto.DT_INT16,
+            self.proto.DT_INT32,
+            self.proto.DT_INT64,
+        )
+        self.uint_types = (
+            self.proto.DT_UINT8,
+            self.proto.DT_UINT16,
+            self.proto.DT_UINT32,
+            self.proto.DT_UINT64,
+        )
+        self.float_types = (
+            self.proto.DT_FLOAT16,
+            self.proto.DT_FLOAT32,
+            self.proto.DT_FLOAT64,
+        )
+
+    def _parse_constants(self, pb_constant):
+        """
+        Parse constants.
+
+        Args:
+            pb_constant (Protobuf): Constant node.
+        """
+        constant = Constant(pb_constant.key)
+        constant.raw = str(pb_constant)
+
+        if pb_constant.value.dtype in self.int_types:
+            constant.output = Output(OutputType(self.dtype_mapping[pb_constant.value.dtype]))
+            constant.output.info['value'] = pb_constant.value.int_val
+        elif pb_constant.value.dtype in self.float_types:
+            constant.output = Output(OutputType(self.dtype_mapping[pb_constant.value.dtype]))
+            constant.output.info['value'] = pb_constant.value.float_val
+        elif pb_constant.value.dtype == self.proto.DT_TENSOR:
+            constant.output = Output(OutputType.TENSOR)
+            if pb_constant.value.tensor_val.data_type:
+                constant.output.info['dtype'] = self.dtype_mapping[pb_constant.value.tensor_val.data_type]
+                constant.output.info['shape'] = tuple(pb_constant.value.tensor_val.dims)
+
+            feature = Tensor.FEATURE(type='', id=constant.name, io='output')
+            values = self.tensor_mapping.get(feature, [])
+            if len(values) == 1:
+                value = values[0]
+                constant.output.info['tensor'] = Tensor(constant.name, 0, value.path)
+        else:
+            constant.output = Output(OutputType.NONE)
+
+        self.constants.append(constant)
+
+    def _parse_parameters(self, pb_parameter):
+        """
+        Parse parameters.
+
+        Args:
+            pb_parameter (Protobuf): Parameter node.
+        """
+        parameter = Parameter(pb_parameter.name)
+        parameter.raw = str(pb_parameter)
+
+        output = Output(OutputType.TENSOR)
+        if pb_parameter.type.tensor_type.elem_type == self.proto.DT_UNDEFINED:
+            output.type = OutputType.NONE
+        else:
+            output.info['dtype'] = self.dtype_mapping[pb_parameter.type.tensor_type.elem_type]
+            output.info['shape'] = tuple([dim.size for dim in pb_parameter.type.tensor_type.shape.dim])
+
+            feature = Tensor.FEATURE(type='', id=parameter.name, io='output')
+            values = self.tensor_mapping.get(feature, [])
+            if len(values) == 1:
+                value = values[0]
+                output.info['tensor'] = Tensor(parameter.name, 0, value.path)
+
+        parameter.output = output
+        self.parameters.append(parameter)
+
+    def _get_proto_value(self, value):
+        """
+        Get proto value.
+
+        Args:
+            value (Protobuf): Protobuf value.
+
+        Returns:
+            any, proto value.
+
+        Raises:
+            UnknownDataTypeError: If data type of protobuf value can not be recognized.
+        """
+        if value.dtype == self.proto.DT_UNDEFINED:
+            return None
+        if value.dtype == self.proto.DT_TYPE:
+            return self.dtype_mapping[value.type_val.data_type]
+        if value.dtype == self.proto.DT_BOOL:
+            return value.bool_val
+        if value.dtype == self.proto.DT_STRING:
+            return value.str_val
+        if value.dtype in self.uint_types:
+            return value.uint_val
+        if value.dtype in self.int_types:
+            return value.int_val
+        if value.dtype in self.float_types:
+            return value.float_val
+        if value.dtype in (self.proto.DT_LIST, self.proto.DT_TUPLE):
+            value_items = []
+            for value_item in value.values:
+                value_items.append(self._get_proto_value(value_item))
+            if value.dtype == self.proto.DT_TUPLE:
+                value_items = tuple(value_items)
+            return value_items
+        raise UnknownDataTypeError(value.dtype)
+
+    def _find_operator_output_tensors(self, operator):
+        """
+        Find operator output tensors.
+
+        Args:
+            operator (Operator): Operator object.
+        """
+        output = operator.output
+        if operator.type in ('tuple_getitem', 'make_tuple') or output.type in (OutputType.BOOL, OutputType.NONE):
+            return
+
+        is_load_op = False
+        if operator.full_name.find('-op') == -1:
+            is_load_op = True
+            feature = Tensor.FEATURE(type='', id=operator.full_name, io='output')
+        else:
+            _, op_id = operator.full_name.split('-op')
+            feature = Tensor.FEATURE(type=operator.type, id=op_id, io='output')
+
+        values = self.tensor_mapping.get(feature)
+        if not values:
+            return
+
+        if output.type == OutputType.TENSOR and len(values) == 1:
+            value = values[0]
+            if is_load_op:
+                output.info['tensor'] = Tensor(operator.full_name, 0, value.path)
+            else:
+                output.info['tensor'] = Tensor(op_id, value.index, value.path)
+        elif output.type == OutputType.TUPLE and len(values) == len(output.info['dtypes']):
+            for value in values:
+                output.info['tensors'][value.index] = Tensor(op_id, value.index, value.path)
+
+    def _process_operator_input(self, operator, input_index, input_types):
+        """
+        Process operator input.
+
+        Args:
+            operator (Operator): Operator.
+            input_index (int): Input index.
+            input_types (dict): Input types.
+        """
+        op_input = operator.inputs[input_index]
+        node = input_types[op_input.type].get(op_input.name)
+        if not node:
+            return
+        node.downstream.append(operator.op_id)
+        if op_input.type == InputType.OPERATOR:
+            op_input.op_id = node.op_id
+
+        op_input.info = {}
+
+        if op_input.type in (InputType.PARAMETER, InputType.CONSTANT):
+            op_input.info = node.output.info.copy() if node.output.info else None
+            return
+
+        if operator.type in ('tuple_getitem', 'TupleGetItem'):
+            op_input.info['dtype'] = OutputType.TUPLE
+            return
+
+        if node.output.type == OutputType.TENSOR:
+            op_input.info = node.output.info.copy()
+        else:
+            op_input.info['dtype'] = node.output.type
+
+        if node.full_name.find('-op') == -1:
+            op_id = node.full_name
+            feature = Tensor.FEATURE(type='', id=node.full_name, io='output')
+        else:
+            _, op_id = node.full_name.split('-op')
+            feature = Tensor.FEATURE(type=node.type, id=op_id, io='input')
+
+        values = self.tensor_mapping.get(feature)
+        if values and len(values) == len(operator.inputs) and op_input.info['tensor'] is None:
+            value = values[input_index]
+            op_input.info['tensor'] = Tensor(op_id, value.index, value.path)
+
+    def _parse_operators(self, pb_operator):
+        """
+        Parse operator.
+
+        Args:
+            pb_operator (Protobuf): Operator node.
+
+        Raises:
+            UnknownDataTypeError: If data type of protobuf value can not be recognized.
+        """
+        operator = Operator(pb_operator.name, pb_operator.op_type)
+        operator.full_name = pb_operator.full_name
+        operator.raw = str(pb_operator)
+        self.operators.append(operator)
+
+        # parse source code
+        if getattr(pb_operator, 'source_address', None):
+            operator.stack = Source.build_stack_from_source_address(pb_operator.source_address)
+
+        # parse attrs
+        for attr in pb_operator.attribute:
+            operator.attrs[attr.name] = self._get_proto_value(attr.value)
+            if attr.name in ('input_names', 'output_names'):
+                operator.attrs[attr.name] = list(operator.attrs[attr.name])
+
+        # parse inputs
+        cst_mapping = dict((cst.name, cst) for cst in self.constants)
+        param_mapping = dict((param.name, param) for param in self.parameters)
+        op_mapping = dict((op.name, op) for op in self.operators)
+        for pb_input in pb_operator.input:
+            input_type = InputType.REFERENCE
+            if pb_input.name in cst_mapping:
+                input_type = InputType.CONSTANT
+            elif pb_input.name in param_mapping:
+                input_type = InputType.PARAMETER
+            elif pb_input.name in op_mapping:
+                input_type = InputType.OPERATOR
+
+            op_input = Input(input_type, pb_input.name)
+            if input_type == InputType.OPERATOR:
+                op_input.op_id = op_mapping[op_input.name].op_id
+
+            operator.inputs.append(op_input)
+
+        # parse output
+        proto_output = pb_operator.output_type
+        if proto_output.data_type in (self.proto.DT_UNDEFINED, self.proto.DT_NONE):
+            output = Output(OutputType.NONE)
+        elif proto_output.data_type == self.proto.DT_BOOL:
+            output = Output(OutputType.BOOL)
+        elif proto_output.data_type == self.proto.DT_TENSOR:
+            output = Output(OutputType.TENSOR)
+            output.info['dtype'] = self.dtype_mapping[proto_output.tensor_type.elem_type]
+            if proto_output.tensor_type.shape:
+                output.info['shape'] = tuple([dim.size for dim in proto_output.tensor_type.shape.dim])
+        elif proto_output.data_type == self.proto.DT_TUPLE:
+            output = Output(OutputType.TUPLE)
+            for elem_type in proto_output.sequence_type.elem_types:
+                dtype = self._get_tuple_item_dtype(elem_type)
+                output.info['dtypes'].append(dtype)
+                output.info['shapes'].append(None)
+                output.info['tensors'].append(None)
+        else:
+            raise UnknownDataTypeError(proto_output.data_type)
+
+        operator.output = output
+        self._find_operator_output_tensors(operator)
+
+    def _get_tuple_item_dtype(self, elem_type):
+        """
+        Get tuple item dtype.
+
+        Args:
+            elem_type (TypeProto) : TypeProto of tuple item operator.
+
+        Returns:
+            any, tuple item dtype.
+        """
+        if elem_type.tensor_type.elem_type != self.proto.DT_UNDEFINED:
+            return self.dtype_mapping[elem_type.tensor_type.elem_type]
+
+        return self.dtype_mapping[elem_type.data_type]
+
+    def _get_tuple_getitem_index(self, operator, constant_mapping):
+        """
+        Get tuple_getitem index.
+
+        Args:
+            operator (Operator) : Operator.
+            constant_mapping (dict) : Constant mapping.
+
+        Returns:
+            int, tuple_getitem index.
+
+        Raises:
+            TupleGetitemIndexError: If tuple_getitem index error occurs.
+        """
+        if operator.inputs[1].type == InputType.CONSTANT:
+            constant = constant_mapping[operator.inputs[1].name]
+            if constant.output.type in Output.SCALAR_TYPES:
+                return int(constant.output.info['value'])
+            raise TupleGetitemIndexError(operator.name, constant.name)
+
+        if operator.inputs[1].type == InputType.SCALAR:
+            return int(operator.inputs[1].name)
+        raise TupleGetitemIndexError(operator.name, f'{operator.inputs[1].name}')
+
+    def _post_process(self):
+        """Post-process."""
+        constant_mapping = self.get_constants()
+        parameter_mapping = self.get_parameters()
+        operator_mapping = dict((operator.name, operator) for operator in self.operators)
+        input_types = {
+            InputType.CONSTANT: constant_mapping,
+            InputType.PARAMETER: parameter_mapping,
+            InputType.OPERATOR: operator_mapping,
+        }
+
+        transition_operator_types = ('Squeeze', 'Reshape', 'ExpandDims', 'Flatten')
+
+        for operator in self.operators:
+            if operator.type in ('make_tuple', 'MakeTuple'):
+                continue
+
+            if operator.type in ('tuple_getitem', 'TupleGetItem'):
+                index = self._get_tuple_getitem_index(operator, constant_mapping)
+                output = operator_mapping[operator.inputs[0].name].output
+                if output.type == OutputType.TUPLE and len(output.info['tensors']) > index:
+                    operator.output.info['tensor'] = output.info['tensors'][index]
+
+            elif operator.type in transition_operator_types and operator.output.info['tensor'] is None:
+                op_input = operator.inputs[0]
+                if op_input.type in input_types:
+                    node = input_types[op_input.type][op_input.name]
+                    operator.output.info['tensor'] = node.output.info['tensor']
+
+            elif operator.type == 'Depend':
+                if operator.output.type in (OutputType.NONE, OutputType.BOOL) \
+                        or (operator.output.type == OutputType.TENSOR and operator.output.info['tensor'] is None):
+                    op_input = operator.inputs[0]
+                    if op_input.type == InputType.OPERATOR:
+                        node = operator_mapping[op_input.name]
+                        operator.output = node.output
+
+            if operator.type == 'Assign' and len(operator.inputs) == 3:
+                operator.inputs = operator.inputs[1:]
+
+            for input_index, op_input in enumerate(operator.inputs):
+                if op_input.type in input_types:
+                    self._process_operator_input(operator, input_index, input_types)
+
+    def parse(self):
+        """Parse."""
+        self.tensor_mapping = Tensor.scan_tensors(self.tensor_dir)
+
+        # parse constants
+        for pb_constant in self.graph_data.const_vals:
+            self._parse_constants(pb_constant)
+
+        # parse parameters:
+        for pb_parameter in self.graph_data.parameters:
+            self._parse_parameters(pb_parameter)
+
+        # parse operators
+        for pb_operator in self.graph_data.node:
+            self._parse_operators(pb_operator)
+
+        # post-process
+        self._post_process()
diff --git a/mindinsight/domain/graph/query.py b/mindinsight/domain/graph/query.py
new file mode 100644
index 00000000..99da1308
--- /dev/null
+++ b/mindinsight/domain/graph/query.py
@@ -0,0 +1,93 @@
+# Copyright 2021 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+"""Query module."""
+
+import re
+from functools import reduce
+
+
+class BaseStackOperator:
+    """Base stack operator."""
+
+    def __init__(self, stack=None):
+        self.stack = stack or []
+
+
+class StackQuery:
+    """Stack query."""
+
+    def __init__(self, operators):
+        self.operators = operators
+
+    def all(self):
+        """
+        Retrieve all operators.
+
+        Returns:
+            list, all operators.
+        """
+        return self.operators
+
+    def get(self, index=0):
+        """
+        Retrieve one operator.
+
+        Args:
+            index (int): Operator index, default is 0.
+
+        Returns:
+            Operator, single operator.
+        """
+        if 0 <= index < len(self.operators):
+            return self.operators[index]
+        return None
+
+    def filter(self, qs, use_regex=False):
+        """
+        Filter operators with query.
+
+        Args:
+            qs (str): Query string.
+            use_regex (bool): Indicates if qs is regex.
+
+        Returns:
+            StackQuery, cloned object.
+        """
+        if use_regex:
+            func = lambda x: bool(re.search(qs, x))
+        else:
+            func = lambda x: x.find(qs) > -1
+
+        operators = []
+        for operator in self.operators:
+            if not operator.stack:
+                continue
+            stack_contents = [
+                f'{source.file_path}:{source.line_no}\n{source.code_line}'
+                for source in operator.stack
+            ]
+            if reduce(lambda x, y: x or y, map(func, stack_contents)):
+                operators.append(operator)
+
+        return self.clone(operators)
+
+    def clone(self, operators):
+        """
+        Clone query object.
+
+        Returns:
+            StackQuery, cloned object.
+        """
+        return StackQuery(operators)
diff --git a/mindinsight/domain/graph/utils.py b/mindinsight/domain/graph/utils.py
new file mode 100644
index 00000000..41530fce
--- /dev/null
+++ b/mindinsight/domain/graph/utils.py
@@ -0,0 +1,483 @@
+# Copyright 2021 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+"""Parse utils module."""
+
+import os
+
+import xlsxwriter
+
+from mindinsight.domain.graph.base import InputType, OutputType
+
+
+class Toolkit:
+    """Toolkit."""
+
+    PLACEHOLDER = '-'
+
+    def __init__(self, dump_dir, constants, parameters, operators):
+        self.dump_dir = dump_dir
+        self.constants = constants
+        self.parameters = parameters
+        self.operators = operators
+
+    def export_xlsx(self, file_path):
+        """
+        Export graph data to Excel file.
+
+        Args:
+            file_path (str) : Excel file path.
+        """
+        target_dir = os.path.dirname(file_path)
+        if not os.path.isdir(target_dir):
+            print(f'Directory {target_dir} not exists')
+            return
+
+        workbook = xlsxwriter.Workbook(file_path)
+
+        # text_v_align: 1-top, 2-middle, 3-bottom
+        # text_h_align: 1-left, 2-center, 3-right
+        styles = dict(
+            header_left_fmt=workbook.add_format(dict(
+                text_v_align=2, text_h_align=1,
+                font_color='#000000', bg_color='#d9d9d9',
+                bold=True,
+            )),
+            header_center_fmt=workbook.add_format(dict(
+                text_v_align=2, text_h_align=2,
+                font_color='#000000', bg_color='#d9d9d9',
+                bold=True,
+            )),
+            content_left_fmt=workbook.add_format(dict(
+                text_v_align=2, text_h_align=1,
+                text_wrap=False,
+            )),
+            content_center_fmt=workbook.add_format(dict(
+                text_v_align=2, text_h_align=2,
+                text_wrap=False,
+            )),
+            content_wrapped_fmt=workbook.add_format(dict(
+                text_v_align=2, text_h_align=1,
+                text_wrap=True,
+            )),
+        )
+
+        self._add_info_worksheet(workbook, styles)
+        self._add_constant_worksheet(workbook, styles)
+        self._add_parameter_worksheet(workbook, styles)
+        self._add_operator_worksheet(workbook, styles)
+        self._add_statistics_worksheet(workbook, styles)
+        self._add_source_worksheet(workbook, styles)
+
+        for worksheet in workbook.sheetnames.values():
+            worksheet.freeze_panes(1, 0)
+            worksheet.freeze_panes(1, 1)
+
+        workbook.close()
+
+    def _convert_column_indices(self, metas):
+        """
+        Convert column metas into indices mapping.
+
+        Args:
+            metas (list): Column metas.
+
+        Returns:
+            dict, holds the indicess of columns.
+        """
+        mapping = {}
+        for index, (name, _, _) in enumerate(metas):
+            mapping[name] = index
+        return mapping
+
+    def _add_info_worksheet(self, workbook, styles):
+        """
+        Add info worksheet.
+
+        Args:
+            workbook (WorkBook): Excel workbook.
+            styles (dict): Workbook styles.
+        """
+        worksheet = workbook.add_worksheet('info')
+
+        # column metas contain column names, styles and widths
+        column_metas = [
+            ('argument', styles['header_center_fmt'], 20),
+            ('value', styles['header_left_fmt'], 150),
+        ]
+        for index, (column, fmt, width) in enumerate(column_metas):
+            worksheet.set_column(index, index, width)
+            worksheet.write(0, index, column, fmt)
+        worksheet.autofilter(0, 0, 0, len(column_metas) - 1)
+
+        indices = self._convert_column_indices(column_metas)
+        worksheet.write(1, indices.get('argument'), 'dump-dir', styles['content_center_fmt'])
+        worksheet.write(1, indices.get('value'), self.dump_dir or '', styles['content_left_fmt'])
+
+    def _get_operator_input_info(self, operator, input_types):
+        """
+        Add operator worksheet.
+
+        Args:
+            operator (Operator): Operator.
+            input_types (dict): Input types.
+
+        Returns:
+            dict, input info content.
+        """
+        input_content = ''
+        input_dtype_content = ''
+        input_shape_content = ''
+
+        for op_input in operator.inputs:
+            if op_input.type == InputType.OPERATOR:
+                op = input_types[InputType.OPERATOR][op_input.op_id]
+                if op.type == 'Load':
+                    input_content += f'{op.type}_{op.name}' + '\n'
+                else:
+                    input_content += f'{op.type}_{op.op_id}' + '\n'
+                    if op_input.info:
+                        input_dtype_content += str(op_input.info['dtype']) + '\n'
+                        input_shape_content += str(op_input.info.get('shape') or Toolkit.PLACEHOLDER) + '\n'
+                    else:
+                        input_dtype_content += Toolkit.PLACEHOLDER + '\n'
+                        input_shape_content += Toolkit.PLACEHOLDER + '\n'
+            elif op_input.type == InputType.PARAMETER:
+                input_content += op_input.name + '\n'
+                param = input_types[InputType.PARAMETER][op_input.name]
+                if param.output:
+                    input_dtype_content += param.output.info['dtype'] + '\n'
+                    input_shape_content += str(param.output.info.get('shape') or Toolkit.PLACEHOLDER) + '\n'
+                else:
+                    input_dtype_content += Toolkit.PLACEHOLDER + '\n'
+                    input_shape_content += Toolkit.PLACEHOLDER + '\n'
+            elif op_input.type == InputType.CONSTANT:
+                input_content += op_input.name + '\n'
+                cst = input_types[InputType.CONSTANT][op_input.name]
+                if cst.output.type == OutputType.TENSOR:
+                    input_dtype_content += cst.output.info.get('dtype') or Toolkit.PLACEHOLDER + '\n'
+                    input_shape_content += str(cst.output.info.get('shape') or Toolkit.PLACEHOLDER) + '\n'
+                else:
+                    input_dtype_content += Toolkit.PLACEHOLDER + '\n'
+                    input_shape_content += Toolkit.PLACEHOLDER + '\n'
+            else:
+                input_content += op_input.name + '\n'
+                input_dtype_content += Toolkit.PLACEHOLDER + '\n'
+                input_shape_content += Toolkit.PLACEHOLDER + '\n'
+
+        return {
+            'input': input_content.strip(),
+            'input_dtype': input_dtype_content.strip(),
+            'input_shape': input_shape_content.strip(),
+        }
+
+    def _add_operator_worksheet(self, workbook, styles):
+        """
+        Add operator worksheet.
+
+        Args:
+            workbook (WorkBook): Excel workbook.
+            styles (dict): Workbook styles.
+        """
+        constant_mapping = dict((constant.name, constant) for constant in self.constants)
+        parameter_mapping = dict((parameter.name, parameter) for parameter in self.parameters)
+        operator_mapping = dict((operator.op_id, operator) for operator in self.operators)
+        input_types = {
+            InputType.CONSTANT: constant_mapping,
+            InputType.PARAMETER: parameter_mapping,
+            InputType.OPERATOR: operator_mapping,
+        }
+
+        worksheet = workbook.add_worksheet('operator')
+
+        # column metas contain column names, styles and widths
+        column_metas = [
+            ('operator', styles['header_left_fmt'], 30),
+            ('input', styles['header_left_fmt'], 30),
+            ('input_dtype', styles['header_left_fmt'], 20),
+            ('input_shape', styles['header_left_fmt'], 25),
+            ('output_dtype', styles['header_left_fmt'], 20),
+            ('output_shape', styles['header_left_fmt'], 25),
+            ('downstream', styles['header_left_fmt'], 30),
+            ('name', styles['header_center_fmt'], 10),
+            ('attrs', styles['header_left_fmt'], 30),
+            ('full_name', styles['header_left_fmt'], 20),
+            ('device_id', styles['header_left_fmt'], 20),
+            ('graph_name', styles['header_left_fmt'], 30),
+            ('stack', styles['header_left_fmt'], 150),
+        ]
+        for index, (column, fmt, width) in enumerate(column_metas):
+            worksheet.set_column(index, index, width)
+            worksheet.write(0, index, column, fmt)
+        worksheet.autofilter(0, 0, 0, len(column_metas) - 1)
+
+        indices = self._convert_column_indices(column_metas)
+        for index, operator in enumerate(self.operators):
+            if operator.type == 'Load':
+                operator_content = f'{operator.type}_{operator.name}'
+            else:
+                operator_content = f'{operator.type}_{operator.op_id}'
+
+            worksheet.write(index + 1, indices.get('operator'), operator_content, styles['content_left_fmt'])
+
+            if operator.type == 'make_tuple':
+                worksheet.write(index + 1, indices.get('device_id'), operator.device_id, styles['content_left_fmt'])
+                worksheet.write(index + 1, indices.get('graph_name'), operator.graph_name, styles['content_left_fmt'])
+                continue
+
+            input_info = self._get_operator_input_info(operator, input_types)
+            worksheet.write(index + 1, indices.get('input'), input_info['input'], styles['content_wrapped_fmt'])
+            worksheet.write(
+                index + 1, indices.get('input_dtype'),
+                input_info['input_dtype'], styles['content_wrapped_fmt'])
+            worksheet.write(
+                index + 1, indices.get('input_shape'),
+                input_info['input_shape'], styles['content_wrapped_fmt'])
+
+            output_dtype_content = ''
+            output_shape_content = ''
+            if operator.output and operator.output.type == OutputType.TENSOR:
+                output_dtype_content = operator.output.info['dtype']
+                output_shape_content = str(operator.output.info['shape'])
+            elif operator.output and operator.output.type == OutputType.TUPLE:
+                output_dtype_content = '\n'.join([
+                    Toolkit.PLACEHOLDER if dtype is None else dtype
+                    for dtype in operator.output.info['dtypes']
+                ])
+                output_shape_content = '\n'.join([
+                    Toolkit.PLACEHOLDER if shape is None else str(shape)
+                    for shape in operator.output.info['shapes']
+                ])
+            worksheet.write(
+                index + 1, indices.get('output_dtype'),
+                output_dtype_content, styles['content_wrapped_fmt'])
+            worksheet.write(
+                index + 1, indices.get('output_shape'),
+                output_shape_content, styles['content_wrapped_fmt'])
+
+            downstream_content = ''
+            for op_id in operator.downstream:
+                op = operator_mapping[op_id]
+                downstream_content += f'{op.type}_{op.op_id}' + '\n'
+            worksheet.write(
+                index + 1, indices.get('downstream'),
+                downstream_content.strip(), styles['content_wrapped_fmt'])
+
+            worksheet.write(index + 1, indices.get('name'), operator.name, styles['content_center_fmt'])
+            worksheet.write(index + 1, indices.get('attrs'), str(operator.attrs), styles['content_left_fmt'])
+            worksheet.write(index + 1, indices.get('full_name'), operator.full_name, styles['content_left_fmt'])
+            worksheet.write(index + 1, indices.get('device_id'), operator.device_id, styles['content_left_fmt'])
+            worksheet.write(index + 1, indices.get('graph_name'), operator.graph_name, styles['content_left_fmt'])
+
+            stack_content = ''
+            for source in operator.stack:
+                stack_content += f'{source.file_path}:{source.line_no}\n{source.code_line}\n'
+            worksheet.write(index + 1, indices.get('stack'), stack_content.strip(), styles['content_wrapped_fmt'])
+
+    def _add_parameter_worksheet(self, workbook, styles):
+        """
+        Add parameter worksheet.
+
+        Args:
+            workbook (WorkBook): Excel workbook.
+            styles (dict): Workbook styles.
+        """
+        worksheet = workbook.add_worksheet('parameter')
+
+        # column metas contain column names, styles and widths
+        column_metas = [
+            ('name', styles['header_left_fmt'], 50),
+            ('output_dtype', styles['header_left_fmt'], 20),
+            ('output_shape', styles['header_left_fmt'], 25),
+            ('downstream', styles['header_left_fmt'], 30),
+            ('device_id', styles['header_left_fmt'], 20),
+            ('graph_name', styles['header_left_fmt'], 30),
+        ]
+        for index, (column, fmt, width) in enumerate(column_metas):
+            worksheet.set_column(index, index, width)
+            worksheet.write(0, index, column, fmt)
+        worksheet.autofilter(0, 0, 0, len(column_metas) - 1)
+
+        indices = self._convert_column_indices(column_metas)
+        operator_mapping = dict((operator.op_id, operator) for operator in self.operators)
+        for index, parameter in enumerate(self.parameters):
+            worksheet.write(index + 1, indices.get('name'), parameter.name, styles['content_left_fmt'])
+            worksheet.write(
+                index + 1, indices.get('output_dtype'),
+                parameter.output.info['dtype'], styles['content_left_fmt'])
+            worksheet.write(
+                index + 1, indices.get('output_shape'),
+                str(parameter.output.info['shape']), styles['content_left_fmt'])
+
+            downstream_nodes = [operator_mapping[op_id] for op_id in parameter.downstream]
+            downstream_content = ''
+            for op in downstream_nodes:
+                if op.type == 'Load':
+                    downstream_content += f'{op.type}_{op.name}' + '\n'
+                else:
+                    downstream_content += f'{op.type}_{op.op_id}' + '\n'
+            worksheet.write(
+                index + 1, indices.get('downstream'),
+                downstream_content.strip(), styles['content_wrapped_fmt'])
+
+            worksheet.write(index + 1, indices.get('device_id'), parameter.device_id, styles['content_left_fmt'])
+            worksheet.write(index + 1, indices.get('graph_name'), parameter.graph_name, styles['content_left_fmt'])
+
+    def _add_constant_worksheet(self, workbook, styles):
+        """
+        Add constant worksheet.
+
+        Args:
+            workbook (WorkBook): Excel workbook.
+            styles (dict): Workbook styles.
+        """
+        worksheet = workbook.add_worksheet('constant')
+
+        # column metas contain column names, styles and widths
+        column_metas = [
+            ('name', styles['header_left_fmt'], 10),
+            ('value', styles['header_left_fmt'], 30),
+            ('downstream', styles['header_left_fmt'], 30),
+            ('device_id', styles['header_left_fmt'], 20),
+            ('graph_name', styles['header_left_fmt'], 30),
+        ]
+        for index, (column, fmt, width) in enumerate(column_metas):
+            worksheet.set_column(index, index, width)
+            worksheet.write(0, index, column, fmt)
+        worksheet.autofilter(0, 0, 0, len(column_metas) - 1)
+
+        indices = self._convert_column_indices(column_metas)
+        operator_mapping = dict((operator.op_id, operator) for operator in self.operators)
+        for index, constant in enumerate(self.constants):
+            worksheet.write(index + 1, indices.get('name'), constant.name, styles['content_left_fmt'])
+
+            if constant.output.type == OutputType.NONE:
+                value_content = 'NONE'
+            elif constant.output.type == OutputType.TENSOR:
+                value_content = 'TENSOR'
+            else:
+                value_content = constant.output.info['value']
+            worksheet.write(index + 1, indices.get('value'), value_content, styles['content_left_fmt'])
+
+            downstream_nodes = [operator_mapping[op_id] for op_id in constant.downstream]
+            downstream_content = ''
+            for op in downstream_nodes:
+                if op.type == 'Load':
+                    downstream_content += f'{op.type}_{op.name}' + '\n'
+                else:
+                    downstream_content += f'{op.type}_{op.op_id}' + '\n'
+            worksheet.write(
+                index + 1, indices.get('downstream'),
+                downstream_content.strip(), styles['content_wrapped_fmt'])
+
+            worksheet.write(index + 1, indices.get('device_id'), constant.device_id, styles['content_left_fmt'])
+            worksheet.write(index + 1, indices.get('graph_name'), constant.graph_name, styles['content_left_fmt'])
+
+    def _add_statistics_worksheet(self, workbook, styles):
+        """
+        Add statistics worksheet.
+
+        Args:
+            workbook (WorkBook): Excel workbook.
+            styles (dict): Workbook styles.
+        """
+        worksheet = workbook.add_worksheet('statistics')
+
+        # column metas contain column names, styles and widths
+        column_metas = [
+            ('operator', styles['header_left_fmt'], 30),
+            ('count', styles['header_center_fmt'], 20),
+        ]
+        for index, (column, fmt, width) in enumerate(column_metas):
+            worksheet.set_column(index, index, width)
+            worksheet.write(0, index, column, fmt)
+        worksheet.autofilter(0, 0, 0, len(column_metas) - 1)
+
+        operator_type_set = set()
+        for operator in self.operators:
+            operator_type_set.add(operator.type)
+
+        operator_types = sorted(list(operator_type_set))
+        stats = dict(zip(operator_types, [0]*len(operator_types)))
+        for operator in self.operators:
+            stats[operator.type] += 1
+
+        indices = self._convert_column_indices(column_metas)
+        for index, operator_type in enumerate(operator_types):
+            worksheet.write(index + 1, indices.get('operator'), operator_type, styles['content_left_fmt'])
+            worksheet.write(index + 1, indices.get('count'), stats[operator_type], styles['content_center_fmt'])
+
+    def _add_source_worksheet(self, workbook, styles):
+        """
+        Add source worksheet.
+
+        Args:
+            workbook (WorkBook): Excel workbook.
+            styles (dict): Workbook styles.
+        """
+        worksheet = workbook.add_worksheet('source')
+
+        # column metas contain column names, styles and widths
+        column_metas = [
+            ('stack', styles['header_left_fmt'], 150),
+            ('operator', styles['header_left_fmt'], 30),
+            ('full_name', styles['header_left_fmt'], 20),
+            ('device_id', styles['header_left_fmt'], 20),
+            ('graph_name', styles['header_left_fmt'], 30),
+        ]
+        for index, (column, fmt, width) in enumerate(column_metas):
+            worksheet.set_column(index, index, width)
+            worksheet.write(0, index, column, fmt)
+        worksheet.autofilter(0, 0, 0, len(column_metas) - 1)
+
+        source_mapping = {}
+        for operator in self.operators:
+            if not operator.stack:
+                continue
+            stack = [f'{source.file_path}:{source.line_no}\n{source.code_line}' for source in operator.stack]
+            key = '\n'.join(stack)
+            if key in source_mapping:
+                source_mapping[key].append(operator)
+            else:
+                source_mapping[key] = [operator]
+
+        row = 0
+        indices = self._convert_column_indices(column_metas)
+        for key in source_mapping:
+            operators = source_mapping[key]
+            operators.sort(key=lambda x: int(x.op_id))
+
+            if len(operators) == 1:
+                worksheet.write(row + 1, indices.get('stack'), key, styles['content_wrapped_fmt'])
+            else:
+                worksheet.merge_range(
+                    row + 1, indices.get('stack'),
+                    row+len(operators), 0, key, styles['content_wrapped_fmt'])
+
+            for index, operator in enumerate(operators):
+                operator_content = f'{operator.type}_{operator.op_id}'
+                worksheet.write(
+                    row + index + 1, indices.get('operator'),
+                    operator_content, styles['content_left_fmt'])
+                worksheet.write(
+                    row + index + 1, indices.get('full_name'),
+                    operator.full_name, styles['content_left_fmt'])
+                worksheet.write(
+                    row + index + 1, indices.get('device_id'),
+                    operator.device_id, styles['content_left_fmt'])
+                worksheet.write(
+                    row + index + 1, indices.get('graph_name'),
+                    operator.graph_name, styles['content_left_fmt'])
+
+            row += len(operators)