diff --git a/mindspore/lite/src/runtime/kernel/arm/base/pooling_base.cc b/mindspore/lite/src/runtime/kernel/arm/base/pooling_base.cc
index 7a1cc29c23..f1e9a61da0 100644
--- a/mindspore/lite/src/runtime/kernel/arm/base/pooling_base.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/base/pooling_base.cc
@@ -48,6 +48,7 @@ int PoolingBaseCPUKernel::SetQuantParam() {
     free(*pooling_quant_arg_);
     free(pooling_quant_arg_);
     pooling_quant_arg_ = nullptr;
+    *this->pooling_quant_arg_ = nullptr;
     return RET_MEMORY_FAILED;
   }
   auto *input_tensor = in_tensors_.at(kInputIndex);
diff --git a/mindspore/lite/tools/anf_importer/import_from_meta_graphT.cc b/mindspore/lite/tools/anf_importer/import_from_meta_graphT.cc
index f26c9a7d6a..6f20b140a9 100644
--- a/mindspore/lite/tools/anf_importer/import_from_meta_graphT.cc
+++ b/mindspore/lite/tools/anf_importer/import_from_meta_graphT.cc
@@ -61,6 +61,7 @@ int AnfImporterFromMetaGraphT::ConverterConstTensor() {
       auto ret = memcpy_s(tensor_data, size, tensor->data.data(), size);
       if (EOK != ret) {
         MS_LOG(ERROR) << "memcpy_s error";
+        delete[] tensor_data;
         return RET_MEMORY_FAILED;
       }
       param_value->set_tensor_addr(tensor_data);
diff --git a/mindspore/lite/tools/converter/legacy_optimizer/graph/infershape_pass.cc b/mindspore/lite/tools/converter/legacy_optimizer/graph/infershape_pass.cc
index 08f750009f..eff624d9e5 100644
--- a/mindspore/lite/tools/converter/legacy_optimizer/graph/infershape_pass.cc
+++ b/mindspore/lite/tools/converter/legacy_optimizer/graph/infershape_pass.cc
@@ -32,9 +32,11 @@ namespace {
 void FreeTensors(std::vector<Tensor *> input_tensors, std::vector<Tensor *> output_tensors) {
   for (auto &tensor : input_tensors) {
     delete tensor;
+    tensor = nullptr;
   }
   for (auto &tensor : output_tensors) {
     delete tensor;
+    tensor = nullptr;
   }
   input_tensors.clear();
   input_tensors.shrink_to_fit();