diff --git a/mindspore/lite/tools/converter/graphdef_transform.cc b/mindspore/lite/tools/converter/graphdef_transform.cc
index 36e46fdfa5..6f682e2b89 100644
--- a/mindspore/lite/tools/converter/graphdef_transform.cc
+++ b/mindspore/lite/tools/converter/graphdef_transform.cc
@@ -15,7 +15,6 @@
  */
 
 #include "tools/converter/graphdef_transform.h"
-#include <memory>
 #include <string>
 #include "schema/model_generated.h"
 #include "src/common/log_adapter.h"
@@ -35,6 +34,7 @@
 #include "tools/converter/legacy_optimizer/graph/topological_sort_pass.h"
 #include "tools/converter/legacy_optimizer/graph/tensor_quant_pass.h"
 #include "tools/converter/legacy_optimizer/graph/infer_quant_param_pass.h"
+#include "tools/converter/legacy_optimizer/graph/set_unused_quant_param_to_default_pass.h"
 
 using std::string;
 namespace mindspore::lite {
@@ -154,6 +154,7 @@ int GraphDefTransform::Transform(const converter::Flags &ctx) {
     quantNodeOptimizer.AddPass(dTypeTransPass);
     quantNodeOptimizer.AddPass(new (std::nothrow) QuantCastFusionPass());
     quantNodeOptimizer.AddPass(new (std::nothrow) IsolatedNodeRemovePass());
+    quantNodeOptimizer.AddPass(new (std::nothrow) SetUnusedQuantParamToDefaultPass());
     status = quantNodeOptimizer.Run(graphDefT);
     if (status != RET_OK && status != RET_NO_CHANGE) {
       MS_LOG(ERROR) << "Run quantNodeOptimizer graphPasses Failed";
diff --git a/mindspore/lite/tools/converter/legacy_optimizer/graph/CMakeLists.txt b/mindspore/lite/tools/converter/legacy_optimizer/graph/CMakeLists.txt
index 38aa6a9fca..58b2ea6ee2 100755
--- a/mindspore/lite/tools/converter/legacy_optimizer/graph/CMakeLists.txt
+++ b/mindspore/lite/tools/converter/legacy_optimizer/graph/CMakeLists.txt
@@ -12,6 +12,7 @@ file(GLOB GRAPH_PASS
         ${CMAKE_CURRENT_SOURCE_DIR}/infershape_pass.cc
         ${CMAKE_CURRENT_SOURCE_DIR}/tensor_quant_pass.cc
         ${CMAKE_CURRENT_SOURCE_DIR}/infer_quant_param_pass.cc
+        ${CMAKE_CURRENT_SOURCE_DIR}/set_unused_quant_param_to_default_pass.cc
         )
 set_property(SOURCE ${GRAPH_PASS} PROPERTY COMPILE_DEFINITIONS SUBMODULE_ID=mindspore::SubModuleId::SM_LITE)
 add_library(graph_pass_mid OBJECT ${GRAPH_PASS})
diff --git a/mindspore/lite/tools/converter/legacy_optimizer/graph/set_unused_quant_param_to_default_pass.cc b/mindspore/lite/tools/converter/legacy_optimizer/graph/set_unused_quant_param_to_default_pass.cc
new file mode 100644
index 0000000000..8d578b3d4b
--- /dev/null
+++ b/mindspore/lite/tools/converter/legacy_optimizer/graph/set_unused_quant_param_to_default_pass.cc
@@ -0,0 +1,34 @@
+/**
+ * Copyright 2019 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.
+ */
+#include "tools/converter/legacy_optimizer/graph/set_unused_quant_param_to_default_pass.h"
+#include "tools/converter/converter_context.h"
+#include "tools/common/tensor_util.h"
+
+namespace mindspore::lite {
+STATUS SetUnusedQuantParamToDefaultPass::Run(schema::MetaGraphT *graph) {
+  for (auto &tensor : graph->allTensors) {
+    for (auto &quant_param : tensor->quantParams) {
+      quant_param->min = 0;
+      quant_param->max = 0;
+      quant_param->narrowRange = true;
+      quant_param->numBits = 8;
+      quant_param->dstDtype = TypeId::kNumberTypeFloat32;
+    }
+  }
+  return RET_OK;
+}
+
+}  // namespace mindspore::lite
diff --git a/mindspore/lite/tools/converter/legacy_optimizer/graph/set_unused_quant_param_to_default_pass.h b/mindspore/lite/tools/converter/legacy_optimizer/graph/set_unused_quant_param_to_default_pass.h
new file mode 100644
index 0000000000..4cf95a255d
--- /dev/null
+++ b/mindspore/lite/tools/converter/legacy_optimizer/graph/set_unused_quant_param_to_default_pass.h
@@ -0,0 +1,34 @@
+/**
+ * Copyright 2019 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.
+ */
+#ifndef LITE_UNUSED_QUANT_PARAM_DATA_REMOVE_PASS_H
+#define LITE_UNUSED_QUANT_PARAM_DATA_REMOVE_PASS_H
+#include <memory>
+#include "tools/converter/optimizer.h"
+#include "tools/common/graph_util.h"
+namespace mindspore {
+namespace lite {
+class SetUnusedQuantParamToDefaultPass : public GraphPass {
+ public:
+  SetUnusedQuantParamToDefaultPass() {}
+
+  ~SetUnusedQuantParamToDefaultPass() override = default;
+
+  STATUS Run(schema::MetaGraphT *graph) override;
+};
+}  // namespace lite
+}  // namespace mindspore
+
+#endif  // LITE_UNUSED_QUANT_PARAM_DATA_REMOVE_PASS_H