diff --git a/mindinsight/debugger/conditionmgr/condition.py b/mindinsight/debugger/conditionmgr/condition.py
index ded17fc4..4be8196c 100644
--- a/mindinsight/debugger/conditionmgr/condition.py
+++ b/mindinsight/debugger/conditionmgr/condition.py
@@ -81,9 +81,9 @@ class ParamTypeEnum(Enum):
 
 class ActivationFuncEnum(Enum):
     """Activation functions."""
-    TANH = 'Tanh'
-    SIGMOID = 'Sigmoid'
-    RELU = 'ReLU'
+    TANH = 'tanh'
+    SIGMOID = 'sigmoid'
+    RELU = 'relu'
 
 
 class ConditionContext:
diff --git a/mindinsight/debugger/stream_cache/node_type_identifier.py b/mindinsight/debugger/stream_cache/node_type_identifier.py
index a2637789..e24f9cc2 100644
--- a/mindinsight/debugger/stream_cache/node_type_identifier.py
+++ b/mindinsight/debugger/stream_cache/node_type_identifier.py
@@ -19,20 +19,21 @@ from mindinsight.datavisual.data_transform.graph import NodeTypeEnum
 from mindinsight.debugger.common.exceptions.exceptions import DebuggerParamValueError
 
 _ACTIVATIONS = [
-    'ELU',
-    'FastGelu',
-    'GELU',
-    'HSigmoid',
-    'HSwish',
-    'LeakyReLU',
-    'LogSigmoid',
-    'LogSoftmax',
-    'PReLU',
-    'ReLU',
-    'ReLU6',
-    'Sigmoid',
-    'Softmax',
-    'Tanh'
+    'elu',
+    'fastgelu',
+    'gelu',
+    'hsigmoid',
+    'hswish',
+    'leakyrelu',
+    'logsigmoid',
+    'logsoftmax',
+    'prelu',
+    'relu',
+    'relu6',
+    'reluv2',
+    'sigmoid',
+    'softmax',
+    'tanh'
 ]
 
 
@@ -122,7 +123,7 @@ def is_activation_node(node, condition=None):
     if not is_gradient_node(node):
         node_type = node.type
         for activation_name in activation_funcs:
-            if node_type == activation_name:
+            if node_type.lower() == activation_name:
                 return True
     return False
 
diff --git a/tests/st/func/debugger/expect_results/restful_results/search_activation.json b/tests/st/func/debugger/expect_results/restful_results/search_activation.json
index d70f0312..2e9a04a9 100644
--- a/tests/st/func/debugger/expect_results/restful_results/search_activation.json
+++ b/tests/st/func/debugger/expect_results/restful_results/search_activation.json
@@ -1 +1,48 @@
-{"nodes": [{"name": "Default", "type": "name_scope", "nodes": [{"name": "Default/network-WithLossCell", "type": "name_scope", "nodes": [{"name": "Default/network-WithLossCell/_backbone-LeNet5", "type": "name_scope", "nodes": [{"name": "Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU", "type": "name_scope", "nodes": [{"name": "Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op12", "type": "ReLU", "nodes": []}, {"name": "Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op15", "type": "ReLU", "nodes": []}]}]}]}]}]}
\ No newline at end of file
+{
+  "nodes": [
+    {
+      "name": "Default",
+      "type": "name_scope",
+      "nodes": [
+        {
+          "name": "Default/network-WithLossCell",
+          "type": "name_scope",
+          "nodes": [
+            {
+              "name": "Default/network-WithLossCell/_backbone-LeNet5",
+              "type": "name_scope",
+              "nodes": [
+                {
+                  "name": "Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU",
+                  "type": "name_scope",
+                  "nodes": [
+                    {
+                      "name": "Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLUV2-op87",
+                      "type": "ReLUV2",
+                      "nodes": []
+                    },
+                    {
+                      "name": "Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLUV2-op89",
+                      "type": "ReLUV2",
+                      "nodes": []
+                    },
+                    {
+                      "name": "Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op12",
+                      "type": "ReLU",
+                      "nodes": []
+                    },
+                    {
+                      "name": "Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op15",
+                      "type": "ReLU",
+                      "nodes": []
+                    }
+                  ]
+                }
+              ]
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/st/func/debugger/expect_results/restful_results/search_activation_multi_graph.json b/tests/st/func/debugger/expect_results/restful_results/search_activation_multi_graph.json
index e6131e3e..15c25fd1 100644
--- a/tests/st/func/debugger/expect_results/restful_results/search_activation_multi_graph.json
+++ b/tests/st/func/debugger/expect_results/restful_results/search_activation_multi_graph.json
@@ -1 +1,104 @@
-{"nodes": [{"name": "graph_0", "type": "name_scope", "nodes": [{"name": "graph_0/Default", "type": "name_scope", "nodes": [{"name": "graph_0/Default/network-WithLossCell", "type": "name_scope", "nodes": [{"name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5", "type": "name_scope", "nodes": [{"name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU", "type": "name_scope", "nodes": [{"name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op12", "type": "ReLU", "nodes": []}, {"name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op15", "type": "ReLU", "nodes": []}]}]}]}]}]}, {"name": "graph_1", "type": "name_scope", "nodes": [{"name": "graph_1/Default", "type": "name_scope", "nodes": [{"name": "graph_1/Default/network-WithLossCell", "type": "name_scope", "nodes": [{"name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5", "type": "name_scope", "nodes": [{"name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU", "type": "name_scope", "nodes": [{"name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op12", "type": "ReLU", "nodes": []}, {"name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op15", "type": "ReLU", "nodes": []}]}]}]}]}]}]}
\ No newline at end of file
+{
+  "nodes": [
+    {
+      "name": "graph_0",
+      "type": "name_scope",
+      "nodes": [
+        {
+          "name": "graph_0/Default",
+          "type": "name_scope",
+          "nodes": [
+            {
+              "name": "graph_0/Default/network-WithLossCell",
+              "type": "name_scope",
+              "nodes": [
+                {
+                  "name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5",
+                  "type": "name_scope",
+                  "nodes": [
+                    {
+                      "name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU",
+                      "type": "name_scope",
+                      "nodes": [
+                        {
+                          "name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLUV2-op87",
+                          "type": "ReLUV2",
+                          "nodes": []
+                        },
+                        {
+                          "name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLUV2-op89",
+                          "type": "ReLUV2",
+                          "nodes": []
+                        },
+                        {
+                          "name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op12",
+                          "type": "ReLU",
+                          "nodes": []
+                        },
+                        {
+                          "name": "graph_0/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op15",
+                          "type": "ReLU",
+                          "nodes": []
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "name": "graph_1",
+      "type": "name_scope",
+      "nodes": [
+        {
+          "name": "graph_1/Default",
+          "type": "name_scope",
+          "nodes": [
+            {
+              "name": "graph_1/Default/network-WithLossCell",
+              "type": "name_scope",
+              "nodes": [
+                {
+                  "name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5",
+                  "type": "name_scope",
+                  "nodes": [
+                    {
+                      "name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU",
+                      "type": "name_scope",
+                      "nodes": [
+                        {
+                          "name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLUV2-op87",
+                          "type": "ReLUV2",
+                          "nodes": []
+                        },
+                        {
+                          "name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLUV2-op89",
+                          "type": "ReLUV2",
+                          "nodes": []
+                        },
+                        {
+                          "name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op12",
+                          "type": "ReLU",
+                          "nodes": []
+                        },
+                        {
+                          "name": "graph_1/Default/network-WithLossCell/_backbone-LeNet5/relu-ReLU/ReLU-op15",
+                          "type": "ReLU",
+                          "nodes": []
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/ut/debugger/stream_cache/test_node_type_identifier.py b/tests/ut/debugger/stream_cache/test_node_type_identifier.py
index 971d4092..56350ed9 100644
--- a/tests/ut/debugger/stream_cache/test_node_type_identifier.py
+++ b/tests/ut/debugger/stream_cache/test_node_type_identifier.py
@@ -60,8 +60,8 @@ class TestNodeTypeIdentifier:
         ('Default/mock/relu_ReLU-op11', "ReLU", None, True),
         ('Gradients/mock/relu_ReLU-op11', "ReLU", None, False),
         ('Default/mock/relu_ReLU-op11', "Parameter", None, False),
-        ('Default/mock/relu_ReLU-op11', "ReLU", {'activation_func': 'Softmax'}, False),
-        ('Default/mock/relu_ReLU-op11', "Softmax", {'activation_func': ['ReLU', 'Softmax']}, True)
+        ('Default/mock/relu_ReLU-op11', "ReLU", {'activation_func': 'softmax'}, False),
+        ('Default/mock/relu_ReLU-op11', "Softmax", {'activation_func': ['relu', 'softmax']}, True)
     ])
     def test_activate_node(self, name, node_type, condition, result):
         """Test activate node."""
diff --git a/tests/ut/debugger/stream_handler/test_graph_handler.py b/tests/ut/debugger/stream_handler/test_graph_handler.py
index b591f2c1..b840a1cd 100644
--- a/tests/ut/debugger/stream_handler/test_graph_handler.py
+++ b/tests/ut/debugger/stream_handler/test_graph_handler.py
@@ -73,7 +73,7 @@ class TestGraphHandler:
 
     @pytest.mark.parametrize("node_type, condition, result_file", [
         ("weight", None, "search_nodes_by_type_0.json"),
-        ("activation", {'activation_func': ['ReLU', 'Softmax']}, "search_nodes_by_type_1.json")
+        ("activation", {'activation_func': ['relu', 'softmax']}, "search_nodes_by_type_1.json")
     ])
     def test_search_nodes_by_type(self, node_type, condition, result_file):
         """Test search nodes by type."""