diff --git a/mindinsight/mindconverter/graph_based_converter/common/code_fragment.py b/mindinsight/mindconverter/graph_based_converter/common/code_fragment.py
index 8c5ac720..1b2accc2 100644
--- a/mindinsight/mindconverter/graph_based_converter/common/code_fragment.py
+++ b/mindinsight/mindconverter/graph_based_converter/common/code_fragment.py
@@ -304,8 +304,30 @@ class NewFragment:
         """
         rewrite_data = {var: data[ExchangeMessageKeywords.VariableScope.value.VARIABLE_NAME.value]}
         if ExchangeMessageKeywords.VariableScope.value.INPUTS.value in data:
-            rewrite_data[ExchangeMessageKeywords.VariableScope.value.INPUTS.value] = ", ".join(
-                data[ExchangeMessageKeywords.VariableScope.value.INPUTS.value])
+            group_inputs = ExchangeMessageKeywords.VariableScope.value.GROUP_INPUTS.value
+            if group_inputs in data:
+                input_tuple_list = []
+                tuple_index = 0
+                tuple_id = 0
+                while tuple_index < len(data[ExchangeMessageKeywords.VariableScope.value.INPUTS.value]):
+                    if tuple_id < len(data[group_inputs]) and tuple_index in data[group_inputs][tuple_id]:
+                        tuple_added = ", ".join(data[ExchangeMessageKeywords.VariableScope.value.INPUTS.value]
+                                                [data[group_inputs][tuple_id][0]:
+                                                 data[group_inputs][tuple_id][-1]+1])
+                        tuple_added = f"({tuple_added})"
+                        input_tuple_list.append(tuple_added)
+                        tuple_index = data[group_inputs][tuple_id][-1]+1
+                        tuple_id += 1
+                        continue
+                    input_tuple_list.append(data[ExchangeMessageKeywords.VariableScope.value.INPUTS.value]
+                                            [tuple_index])
+                    tuple_index += 1
+
+                rewrite_data[ExchangeMessageKeywords.VariableScope.value.INPUTS.value] = \
+                    ", ".join(input_tuple_list)
+            else:
+                rewrite_data[ExchangeMessageKeywords.VariableScope.value.INPUTS.value] = ", ".join(
+                    data[ExchangeMessageKeywords.VariableScope.value.INPUTS.value])
         if ExchangeMessageKeywords.VariableScope.value.TRAINABLE_PARAMS.value in data:
             rewrite_data.update(data[ExchangeMessageKeywords.VariableScope.value.TRAINABLE_PARAMS.value])
         if ExchangeMessageKeywords.VariableScope.value.PARAMETERS_DECLARED.value in data:
diff --git a/mindinsight/mindconverter/graph_based_converter/constant.py b/mindinsight/mindconverter/graph_based_converter/constant.py
index 1e1daad0..28d52a5b 100644
--- a/mindinsight/mindconverter/graph_based_converter/constant.py
+++ b/mindinsight/mindconverter/graph_based_converter/constant.py
@@ -108,6 +108,7 @@ class ExchangeMessageKeywords(Enum):
         WEIGHTS = "weights"
         TRAINABLE_PARAMS = "trainable_params"
         PARAMETERS_DECLARED = "parameters"
+        GROUP_INPUTS = "group_inputs"
 
 
 BINARY_HEADER_PYTORCH_FILE = \
diff --git a/mindinsight/mindconverter/graph_based_converter/framework.py b/mindinsight/mindconverter/graph_based_converter/framework.py
index 1422b5b3..da4f1e9d 100644
--- a/mindinsight/mindconverter/graph_based_converter/framework.py
+++ b/mindinsight/mindconverter/graph_based_converter/framework.py
@@ -21,7 +21,7 @@ from typing import List
 from importlib import import_module
 from importlib.util import find_spec
 from functools import partial
-
+from google.protobuf.internal import api_implementation
 from mindinsight.mindconverter.graph_based_converter.common.global_context import GlobalContext
 from mindinsight.mindconverter.graph_based_converter.common.utils import lib_version_satisfied, onnx_satisfied, \
     save_code_file_and_report, get_framework_type, check_dependency_integrity, get_third_part_lib_validation_error_info
@@ -35,7 +35,7 @@ from mindinsight.mindconverter.common.exceptions import GraphInitError, TreeCrea
     BadParamError
 from mindinsight.mindconverter.graph_based_converter.third_party_graph import GraphFactory
 
-from google.protobuf.internal import api_implementation
+
 
 check_common_dependency_integrity = partial(check_dependency_integrity,
                                             "onnx", "onnxruntime", "onnxoptimizer")
@@ -267,7 +267,8 @@ def main_graph_base_converter(file_config):
 
     if api_implementation.Type() != 'cpp' or os.getenv('PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION') != 'cpp':
         log_console.warning("Protobuf is currently implemented in \"Python\". "
-                            "The conversion process may take a long time. Please use the \"C++\" backend version.")
+                            "The conversion process may take a long time. "
+                            "Please use `export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=cpp` to enable cpp backend.")
 
     graph_path = file_config['model_file']
     frame_type = get_framework_type(graph_path)
diff --git a/mindinsight/mindconverter/graph_based_converter/mapper/impl/nn/lstm_mapper.py b/mindinsight/mindconverter/graph_based_converter/mapper/impl/nn/lstm_mapper.py
new file mode 100644
index 00000000..9f69673d
--- /dev/null
+++ b/mindinsight/mindconverter/graph_based_converter/mapper/impl/nn/lstm_mapper.py
@@ -0,0 +1,108 @@
+# Copyright 2021 Huawei Technologies Co., Ltd.All Rights Reserved.
+#
+# 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.
+# ==============================================================================
+"""Mapper module."""
+from mindinsight.mindconverter.graph_based_converter.mapper.base import ONNXToMindSporeMapper
+from mindinsight.mindconverter.graph_based_converter.constant import ExchangeMessageKeywords, TemplateKeywords
+
+
+
+class LSTMMapper(ONNXToMindSporeMapper):
+    """LSTM mapper."""
+
+    @staticmethod
+    def _operation_name_in_ms(*args, **kwargs):
+        return "nn.LSTM"
+
+    @staticmethod
+    def _convert_params(**kwargs):
+        """convert params"""
+        weights = kwargs["weights"]
+        input_weights = LSTMMapper._find_val_by_index(0, weights)
+        embed_dim = input_weights.shape[2]
+        params = kwargs['params']
+        output_shape_list = kwargs.get("params").get("output_shape")
+        output_shape = output_shape_list[0].node_output_shape
+        # Here the first element determine if the lstm is bidirectional
+        # `1` means unidirectional. `2` means bidirectional
+        if output_shape[1] == 2:
+            return {
+                "input_size": embed_dim,
+                "hidden_size": params["hidden_size"],
+                "bidirectional": True
+            }
+
+        return {
+            "input_size": embed_dim,
+            "hidden_size": params["hidden_size"]
+        }
+
+    @staticmethod
+    def _convert_trained_weights(**kwargs):
+        return dict()
+
+    @staticmethod
+    def _generate_snippet_template(**kwargs):
+        """generate snippet template"""
+        op = kwargs.get("operation")
+        args = kwargs.get("converted_params", dict())
+        weights = kwargs.get("weights")
+        output_shape_list = kwargs.get("raw_params").get("output_shape")
+        output_shape = output_shape_list[0].node_output_shape
+        output_reshape = (output_shape[0], output_shape[2], output_shape[1], output_shape[3])
+        trainable_params = kwargs.get("trainable_params", dict())
+        if not op:
+            raise ValueError("Can not get MindSpore operation name.")
+        variable_slot = "var_0"
+        init_template = f"self.{{{variable_slot}}} = {op}({', '.join(['%s={%s}' % (p, p) for p in args])})"
+        init_reshape = f"self.{{{variable_slot}}}_reshape = P.Reshape()"
+        init_transpose = f"self.{{{variable_slot}}}_transpose = P.Transpose()"
+        init_cast = f"self.{{{variable_slot}}}_cast = P.Cast()"
+        construct_template = f"opt_{{{variable_slot}}}, (opt_{{{variable_slot}}}_h, " \
+                             f"opt_{{{variable_slot}}}_c) = self.{{{variable_slot}}}" \
+                             f"({{{ExchangeMessageKeywords.VariableScope.value.INPUTS.value}}})"
+        construct_template_cast = f"opt_{{{variable_slot}}} = " \
+                                     f"self.{{{variable_slot}}}_cast(" \
+                                     f"opt_{{{variable_slot}}}, mindspore.float32)"
+        construct_template_reshape = f"opt_{{{variable_slot}}} = " \
+                                     f"self.{{{variable_slot}}}_reshape(" \
+                                     f"opt_{{{variable_slot}}}, {output_reshape})"
+        construct_template_transpose = f"opt_{{{variable_slot}}} = " \
+                                       f"self.{{{variable_slot}}}_transpose(" \
+                                       f"opt_{{{variable_slot}}}, (0, 2, 1, 3))"
+        template = {
+            variable_slot: {
+                TemplateKeywords.INIT.value: [init_template, init_cast, init_reshape, init_transpose],
+                TemplateKeywords.CONSTRUCT.value: [construct_template,
+                                                   construct_template_cast,
+                                                   construct_template_reshape,
+                                                   construct_template_transpose]
+            }
+        }
+        exchange_msg = {
+            variable_slot: {
+                ExchangeMessageKeywords.VariableScope.value.OPERATION.value: op,
+                ExchangeMessageKeywords.VariableScope.value.VARIABLE_NAME.value: None,
+                ExchangeMessageKeywords.VariableScope.value.OUTPUT_TYPE.value:
+                    ExchangeMessageKeywords.VariableScope.value.TSR_TYPE.value,
+                ExchangeMessageKeywords.VariableScope.value.INPUTS.value: [],
+                ExchangeMessageKeywords.VariableScope.value.GROUP_INPUTS.value: [(1, 2)],
+                ExchangeMessageKeywords.VariableScope.value.ARGS.value: args,
+                ExchangeMessageKeywords.VariableScope.value.WEIGHTS.value: weights,
+                ExchangeMessageKeywords.VariableScope.value.TRAINABLE_PARAMS.value: trainable_params
+            }
+        }
+        outputs_list = [f"opt_{{{variable_slot}}}", f"opt_{{{variable_slot}}}_h", f"opt_{{{variable_slot}}}_c"]
+        outputs_mapping = ((0, 0), (1, 1), (2, 2),)
+        return template, exchange_msg, outputs_list, outputs_mapping
diff --git a/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/concat_mapper.py b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/concat_mapper.py
index dfa6c779..c75c2e88 100644
--- a/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/concat_mapper.py
+++ b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/concat_mapper.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 # ==============================================================================
 """Mapper module."""
-from mindinsight.mindconverter.graph_based_converter.common.utils import reset_init_or_construct
 from mindinsight.mindconverter.graph_based_converter.constant import ExchangeMessageKeywords, TemplateKeywords
 from mindinsight.mindconverter.graph_based_converter.mapper.base import ONNXToMindSporeMapper
 
@@ -36,11 +35,56 @@ class ConcatMapper(ONNXToMindSporeMapper):
 
     @staticmethod
     def _generate_snippet_template(**kwargs):
-        template, exchange_msg, outputs_list, outputs_mapping = ONNXToMindSporeMapper._generate_snippet_template(
-            **kwargs)
+        weights = kwargs.get("weights")
+        op = kwargs.get("operation")
+        args = kwargs.get("converted_params", dict())
+        trainable_params = kwargs.get("trainable_params", dict())
+        if not op:
+            raise ValueError("Can not get MindSpore operation name.")
+
         variable_slot = "var_0"
+        init_template = f"self.{{{variable_slot}}} = {op}({', '.join(['%s={%s}' % (p, p) for p in args])})"
         construct_template = f"opt_{{{variable_slot}}} = self.{{{variable_slot}}}" \
                              f"(({{{ExchangeMessageKeywords.VariableScope.value.INPUTS.value}}},))"
-        template = reset_init_or_construct(template, variable_slot, [construct_template],
-                                           TemplateKeywords.CONSTRUCT.value)
+        if weights:
+            tensor = ConcatMapper._find_val_by_index(0, weights)
+            weight_shape = tensor.shape
+            weight_type = tensor.dtype
+            args["weight_shape"] = weight_shape
+            args["weight_type"] = weight_type
+            init_tensor = f"self.{{{variable_slot}}}_w = " \
+                          f"Parameter(Tensor(np.zeros({{weight_shape}}).astype(np.{{weight_type}})), " \
+                          f"name=None)"
+            construct_template = f"opt_{{{variable_slot}}} = self.{{{variable_slot}}}" \
+                                 f"(({{{ExchangeMessageKeywords.VariableScope.value.INPUTS.value}}}," \
+                                 f"self.{{{variable_slot}}}_w))"
+            template = {
+                variable_slot: {
+                    TemplateKeywords.INIT.value: [init_template, init_tensor],
+                    TemplateKeywords.CONSTRUCT.value: [construct_template]
+                }
+            }
+
+        else:
+            template = {
+                variable_slot: {
+                    TemplateKeywords.INIT.value: [init_template],
+                    TemplateKeywords.CONSTRUCT.value: [construct_template]
+                }
+            }
+
+        exchange_msg = {
+            variable_slot: {
+                ExchangeMessageKeywords.VariableScope.value.OPERATION.value: op,
+                ExchangeMessageKeywords.VariableScope.value.VARIABLE_NAME.value: None,
+                ExchangeMessageKeywords.VariableScope.value.OUTPUT_TYPE.value:
+                    ExchangeMessageKeywords.VariableScope.value.TSR_TYPE.value,
+                ExchangeMessageKeywords.VariableScope.value.INPUTS.value: [],
+                ExchangeMessageKeywords.VariableScope.value.ARGS.value: args,
+                ExchangeMessageKeywords.VariableScope.value.WEIGHTS.value: weights,
+                ExchangeMessageKeywords.VariableScope.value.TRAINABLE_PARAMS.value: trainable_params
+            }
+        }
+        outputs_list = [f"opt_{{{variable_slot}}}"]
+        outputs_mapping = ((0, 0),)
         return template, exchange_msg, outputs_list, outputs_mapping
diff --git a/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/floor_mapper.py b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/floor_mapper.py
new file mode 100644
index 00000000..2039239a
--- /dev/null
+++ b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/floor_mapper.py
@@ -0,0 +1,32 @@
+# Copyright 2021 Huawei Technologies Co., Ltd.All Rights Reserved.
+#
+# 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.
+# ==============================================================================
+"""Mapper module."""
+from mindinsight.mindconverter.graph_based_converter.mapper.base import ONNXToMindSporeMapper
+
+
+class FloorMapper(ONNXToMindSporeMapper):
+    """Floor mapper."""
+
+    @staticmethod
+    def _operation_name_in_ms(*args, **kwargs):
+        return "P.Floor"
+
+    @staticmethod
+    def _convert_params(**kwargs):
+        return dict()
+
+    @staticmethod
+    def _convert_trained_weights(**kwargs):
+        return dict()
diff --git a/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/slice_mapper.py b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/slice_mapper.py
index 6af7378d..b104f2e4 100644
--- a/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/slice_mapper.py
+++ b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/slice_mapper.py
@@ -37,6 +37,7 @@ class SliceMapper(ONNXToMindSporeMapper):
 
     @staticmethod
     def _generate_snippet_template(**kwargs):
+        """Generate snippet template."""
         template, exchange_msg, outputs_list, outputs_mapping = ONNXToMindSporeMapper._generate_snippet_template(
             **kwargs)
         op = kwargs.get("operation")
@@ -47,13 +48,14 @@ class SliceMapper(ONNXToMindSporeMapper):
 
         starts = SliceMapper._find_val_by_index(0, weights)
         ends = SliceMapper._find_val_by_index(1, weights)
-        axes = SliceMapper._find_val_by_index(2, weights, np.array([i for i in range(len(ipt_shape))]))
+        axes = SliceMapper._find_val_by_index(2, weights, np.array(list(range(len(ipt_shape)))))
         steps = SliceMapper._find_val_by_index(3, weights, np.array([1 for _ in range(len(ipt_shape))]))
 
         if not op:
             raise ValueError("Can not get MindSpore operation name.")
+
         if not weights:
-            raise ValueError("Cannot get required params from slice.")
+            raise ValueError("Can not get required params from slice.")
 
         if axes.shape != (1,):
             ordered_begin = sorted(zip(starts.tolist(), axes.tolist()), key=lambda x: x[1], reverse=False)
@@ -71,9 +73,9 @@ class SliceMapper(ONNXToMindSporeMapper):
             end[axis] = min(ends.tolist()[0], end[axis])
             strides[axis] = steps.tolist()[0]
 
-        args["begin"] = tuple(begin)
-        args["end"] = tuple(end)
-        args["strides"] = tuple(strides)
+        args['begin'] = tuple(begin)
+        args['end'] = tuple(end)
+        args['strides'] = tuple(strides)
 
         variable_slot = "var_0"
         init_template = f"self.{{{variable_slot}}} = {op}()"
@@ -84,7 +86,8 @@ class SliceMapper(ONNXToMindSporeMapper):
                              f"({{{ExchangeMessageKeywords.VariableScope.value.INPUTS.value}}}, " \
                              f"self.{{{variable_slot}}}_begin, self.{{{variable_slot}}}_end, " \
                              f"self.{{{variable_slot}}}_strides)"
-        template = reset_init_or_construct(template, variable_slot, [init_template, init_begin, init_end, init_strides],
+        template = reset_init_or_construct(template, variable_slot,
+                                           [init_template, init_begin, init_end, init_strides],
                                            TemplateKeywords.INIT.value)
         template = reset_init_or_construct(template, variable_slot, [construct_template],
                                            TemplateKeywords.CONSTRUCT.value)
diff --git a/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/split_mapper.py b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/split_mapper.py
index aa682eba..6831bbb8 100644
--- a/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/split_mapper.py
+++ b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/split_mapper.py
@@ -27,8 +27,8 @@ class SplitMapper(ONNXToMindSporeMapper):
     @staticmethod
     def _convert_params(**kwargs):
         axis = kwargs["params"]["axis"]
-        split = kwargs["params"]["split"]
-        output_num = len(split)
+        output_shape_list = kwargs["params"]["output_shape"]
+        output_num = len(output_shape_list)
         return {"axis": axis,
                 "output_num": output_num}
 
@@ -43,9 +43,16 @@ class SplitMapper(ONNXToMindSporeMapper):
         weights = kwargs.get("weights")
         if not op:
             raise ValueError("Can not get MindSpore operation name.")
+        converted_params = kwargs["converted_params"]
+        output_num = converted_params["output_num"]
+
         variable_slot = "var_0"
         init_template = f"self.{{{variable_slot}}} = {op}({', '.join(['%s={%s}' % (p, p) for p in args])})"
-        construct_template = f"opt_{{{variable_slot}}} = self.{{{variable_slot}}}" \
+        slot_list = [f"opt_{{{variable_slot}}}"]
+        for i in range(1, output_num): # Here `1` means the second output of the operator
+            slot_list.append(f"opt_{{{variable_slot}}}_{i}")
+        slot_final = ", ".join(slot_list)
+        construct_template = f"{slot_final} = self.{{{variable_slot}}}" \
                              f"({{{ExchangeMessageKeywords.VariableScope.value.INPUTS.value}}})"
         template = {
             variable_slot: {
@@ -58,13 +65,16 @@ class SplitMapper(ONNXToMindSporeMapper):
                 ExchangeMessageKeywords.VariableScope.value.OPERATION.value: op,
                 ExchangeMessageKeywords.VariableScope.value.VARIABLE_NAME.value: None,
                 ExchangeMessageKeywords.VariableScope.value.OUTPUT_TYPE.value:
-                    ExchangeMessageKeywords.VariableScope.value.ARR_TYPE.value,
+                    ExchangeMessageKeywords.VariableScope.value.TSR_TYPE.value,
                 ExchangeMessageKeywords.VariableScope.value.INPUTS.value: [],
                 ExchangeMessageKeywords.VariableScope.value.ARGS.value: args,
                 ExchangeMessageKeywords.VariableScope.value.WEIGHTS.value: weights,
                 ExchangeMessageKeywords.VariableScope.value.TRAINABLE_PARAMS.value: {}
             }
         }
-        outputs_list = [f"opt_{{{variable_slot}}}"]
-        outputs_mapping = ((0, 0),)
+        outputs_list = slot_list
+        outputs_mapping = []
+        for i in range(output_num):
+            outputs_mapping.append((i, i))
+        outputs_mapping = tuple(outputs_mapping)
         return template, exchange_msg, outputs_list, outputs_mapping
diff --git a/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/squeeze_mapper.py b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/squeeze_mapper.py
new file mode 100644
index 00000000..80e2cf30
--- /dev/null
+++ b/mindinsight/mindconverter/graph_based_converter/mapper/impl/ops/squeeze_mapper.py
@@ -0,0 +1,40 @@
+# Copyright 2021 Huawei Technologies Co., Ltd.All Rights Reserved.
+#
+# 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.
+# ==============================================================================
+"""Mapper module."""
+from mindinsight.mindconverter.graph_based_converter.mapper.base import ONNXToMindSporeMapper
+
+
+class SqueezeMapper(ONNXToMindSporeMapper):
+    """Squeeze mapper."""
+
+    @staticmethod
+    def _operation_name_in_ms(*args, **kwargs):
+        return "P.Squeeze"
+
+    @staticmethod
+    def _convert_params(**kwargs):
+        params = kwargs["params"]
+        if len(params['axes']) == 1:
+            return {
+                "axis": params['axes'][0]
+            }
+
+        return {
+            "axis": tuple(params['axes'])
+        }
+
+    @staticmethod
+    def _convert_trained_weights(**kwargs):
+        return dict()
diff --git a/mindinsight/mindconverter/graph_based_converter/mapper/onnx_to_ms.json b/mindinsight/mindconverter/graph_based_converter/mapper/onnx_to_ms.json
index 3bb9b314..bcec726b 100644
--- a/mindinsight/mindconverter/graph_based_converter/mapper/onnx_to_ms.json
+++ b/mindinsight/mindconverter/graph_based_converter/mapper/onnx_to_ms.json
@@ -30,5 +30,8 @@
   "onnx::Erf": "mindinsight.mindconverter.graph_based_converter.mapper.impl.ops.erf_mapper.ErfMapper",
   "onnx::Pow": "mindinsight.mindconverter.graph_based_converter.mapper.impl.ops.pow_mapper.PowMapper",
   "onnx::Einsum": "mindinsight.mindconverter.graph_based_converter.mapper.impl.ops.einsum_mapper.EinSumMapper",
-  "onnx::Tanh": "mindinsight.mindconverter.graph_based_converter.mapper.impl.nn.tanh_mapper.TanhMapper"
+  "onnx::Tanh": "mindinsight.mindconverter.graph_based_converter.mapper.impl.nn.tanh_mapper.TanhMapper",
+  "onnx::LSTM": "mindinsight.mindconverter.graph_based_converter.mapper.impl.nn.lstm_mapper.LSTMMapper",
+  "onnx::Squeeze": "mindinsight.mindconverter.graph_based_converter.mapper.impl.ops.squeeze_mapper.SqueezeMapper",
+  "onnx::Floor": "mindinsight.mindconverter.graph_based_converter.mapper.impl.ops.floor_mapper.FloorMapper"
 }
\ No newline at end of file
diff --git a/mindinsight/mindconverter/graph_based_converter/third_party_graph/onnx_graph.py b/mindinsight/mindconverter/graph_based_converter/third_party_graph/onnx_graph.py
index 584fb783..45ccedda 100644
--- a/mindinsight/mindconverter/graph_based_converter/third_party_graph/onnx_graph.py
+++ b/mindinsight/mindconverter/graph_based_converter/third_party_graph/onnx_graph.py
@@ -23,7 +23,8 @@ from mindinsight.mindconverter.graph_based_converter.third_party_graph.input_nod
 from mindinsight.mindconverter.graph_based_converter.third_party_graph.onnx_graph_node import OnnxGraphNode
 from mindinsight.mindconverter.graph_based_converter.third_party_graph.pytorch_graph_parser import PyTorchGraphParser
 from mindinsight.mindconverter.graph_based_converter.third_party_graph.tf_graph_parser import TFGraphParser
-from mindinsight.mindconverter.graph_based_converter.third_party_graph.onnx_utils import OnnxDataLoader, NodeWeight
+from mindinsight.mindconverter.graph_based_converter.third_party_graph.onnx_utils import OnnxDataLoader, \
+    NodeWeight, NodeOutputShape
 from mindinsight.mindconverter.graph_based_converter.sub_graph_searcher import generate_scope_name
 
 NONE_SCOPE_OP = {
@@ -139,6 +140,9 @@ class OnnxGraph(Graph):
 
         super(OnnxGraph, self).build()
         self._collect_input_shape_of_each_node()
+        for node_name in self._shape_dict:
+            if len(self._shape_dict[node_name]) == 1:
+                self._shape_dict[node_name] = self._shape_dict[node_name][0].node_output_shape
 
     def _collect_input_shape_of_each_node(self):
         """
@@ -156,11 +160,17 @@ class OnnxGraph(Graph):
                     input_nodes[ipt].set_scope_name(node.scope_name)
                     node.precursor_nodes.insert(0, ipt)
                     input_nodes[ipt].set_successor_nodes(node_name)
-                    self._shape_dict[ipt] = input_nodes[ipt].output_shape
+                    output_shape_single = NodeOutputShape(ipt, None, input_nodes[ipt].output_shape)
+                    if ipt not in self._shape_dict:
+                        self._shape_dict.setdefault(ipt, []).append(output_shape_single)
             ipt_shape = []
-            for p_nd in node.precursor_nodes:
-                shp = self._shape_dict.get(p_nd)
-                ipt_shape.append(tuple(shp) if isinstance(shp, list) else shp)
+            for ipt_nd_name in node.ir_node_inputs:
+                for p_nd in node.precursor_nodes:
+                    shp_list = self._shape_dict.get(p_nd)
+                    for shp in shp_list:
+                        if ipt_nd_name == shp.node_opt_name:
+                            shp_single = shp.node_output_shape
+                            ipt_shape.append(tuple(shp_single) if isinstance(shp_single, list) else shp_single)
 
             self._input_shape[node_name] = ipt_shape[0] if len(ipt_shape) == 1 else ipt_shape
 
diff --git a/mindinsight/mindconverter/graph_based_converter/third_party_graph/onnx_utils.py b/mindinsight/mindconverter/graph_based_converter/third_party_graph/onnx_utils.py
index 9982870e..4824a594 100644
--- a/mindinsight/mindconverter/graph_based_converter/third_party_graph/onnx_utils.py
+++ b/mindinsight/mindconverter/graph_based_converter/third_party_graph/onnx_utils.py
@@ -438,6 +438,15 @@ class OnnxDataLoader:
         for tensor in tensors:
             t = OnnxTensor(tensor)
             self.tensors_dict[t.name] = t
+
+        idx = 0
+        while idx < len(self.model.graph.output):
+            cur_opt = self.model.graph.output[idx]
+            if cur_opt.name not in self.output_nodes:
+                self.model.graph.output.remove(cur_opt)
+                continue
+            idx += 1
+
         self._global_context.onnx_tensors_collection = self.tensors_dict
 
     def _parse_node_output_shape(self):
@@ -465,7 +474,8 @@ class OnnxDataLoader:
             node_name = self.output_name_to_node_name[node_opt_name]
             if not node_name:
                 raise GraphInitError(msg=f"Cannot find where edge {node_opt_name} comes from.")
-            self.node_output_shape_dict[node_name] = shape
+            node_output_shape = NodeOutputShape(node_opt_name, node_name, shape)
+            self.node_output_shape_dict.setdefault(node_name, []).append(node_output_shape)
 
     def get_node(self, node_name):
         """Get the OnnxNode instance by node name."""
@@ -576,12 +586,16 @@ class OnnxDataLoader:
         """Create a PASS to optimize shape and reshape operations in ONNX ir graph."""
         to_be_eliminated_op = {"Cast", "Concat", "Squeeze", "Unsqueeze", "Slice",
                                "Gather", "Shape"}
-
+        def _is_origin_inputs(node):
+            for ipt in node.input_name_list:
+                if ipt not in self.input_nodes:
+                    return False
+            return True
         def _traceback_precursor_nodes_until_shape_op(node_ref):
             nonlocal self
             e_nodes = []
             node = self._nodes_dict[self.output_name_to_node_name[node_ref]]
-            if node.op_type not in to_be_eliminated_op:
+            if node.op_type not in to_be_eliminated_op or _is_origin_inputs(node):
                 return e_nodes
             e_nodes.append(node.name)
             for ipt in node.input_name_list:
@@ -646,3 +660,23 @@ class NodeWeight:
     @property
     def location(self):
         return self._weight_location
+
+
+class NodeOutputShape:
+    """Node output shape and its name."""
+    def __init__(self, node_opt_name, node_name, node_output_shape):
+        self._node_opt_name = node_opt_name
+        self._node_name = node_name
+        self._node_output_shape = node_output_shape
+
+    @property
+    def node_opt_name(self):
+        return self._node_opt_name
+
+    @property
+    def node_name(self):
+        return self._node_name
+
+    @property
+    def node_output_shape(self):
+        return self._node_output_shape