diff --git a/mindspore/lite/src/runtime/kernel/cpu/fp32/convolution_delegate_fp32.cc b/mindspore/lite/src/runtime/kernel/cpu/fp32/convolution_delegate_fp32.cc
index e937bf894da..aa51b9e8266 100644
--- a/mindspore/lite/src/runtime/kernel/cpu/fp32/convolution_delegate_fp32.cc
+++ b/mindspore/lite/src/runtime/kernel/cpu/fp32/convolution_delegate_fp32.cc
@@ -233,7 +233,7 @@ bool ConvolutionDelegateCPUKernel::CheckAvxUseSWConv(const ConvParameter *conv_p
 kernel::LiteKernel *ConvolutionDelegateCPUKernel::CreateConv1x1MatmulKernel() {
   auto conv_param = reinterpret_cast<ConvParameter *>(op_parameter_);
 
-  matmul_param_ = new (std::nothrow) MatMulParameter;
+  matmul_param_ = reinterpret_cast<MatMulParameter *>(malloc(sizeof(MatMulParameter)));
   if (matmul_param_ == nullptr) {
     MS_LOG(WARNING) << "Memory allocation failed, Create Conv1x1 Matmul Kernel failed.";
     return nullptr;
diff --git a/mindspore/lite/src/runtime/kernel/cpu/fp32/convolution_delegate_fp32.h b/mindspore/lite/src/runtime/kernel/cpu/fp32/convolution_delegate_fp32.h
index 076755e8756..c31724c100f 100644
--- a/mindspore/lite/src/runtime/kernel/cpu/fp32/convolution_delegate_fp32.h
+++ b/mindspore/lite/src/runtime/kernel/cpu/fp32/convolution_delegate_fp32.h
@@ -31,14 +31,17 @@ class ConvolutionDelegateCPUKernel : public LiteKernel {
       : LiteKernel(parameter, inputs, outputs, ctx) {}
   ~ConvolutionDelegateCPUKernel() override {
     FreeCopiedData();
-    if (matmul_param_ != nullptr) {
-      matmul_param_ = nullptr;
-    }
     if (conv_kernel_ != nullptr) {
+      if (matmul_param_ != nullptr) {
+        free(op_parameter_);
+      }
       op_parameter_ = nullptr;  // op_parameter will be freed in conv_kernel
       delete conv_kernel_;
       conv_kernel_ = nullptr;
     }
+    if (matmul_param_ != nullptr) {
+      matmul_param_ = nullptr;
+    }
   };
   int Prepare() override;
   int ReSize() override;