diff --git a/mindspore/lite/micro/coder/opcoders/nnacl/fp32/arithmetic_fp32_coder.cc b/mindspore/lite/micro/coder/opcoders/nnacl/fp32/arithmetic_fp32_coder.cc
index e361d0c0c9..fc6c504c0f 100644
--- a/mindspore/lite/micro/coder/opcoders/nnacl/fp32/arithmetic_fp32_coder.cc
+++ b/mindspore/lite/micro/coder/opcoders/nnacl/fp32/arithmetic_fp32_coder.cc
@@ -93,7 +93,11 @@ int ArithmeticFP32Coder::ReSize(CoderContext *const context) {
   CalcMultiplesAndStrides(arithmetic_parameter_);
   if (arithmetic_parameter_->broadcasting_) {
     outside_ = 1;
-    for (auto i = arithmetic_parameter_->ndim_ - 1; i >= 0; --i) {
+    int resize_n_index = static_cast<int>(arithmetic_parameter_->ndim_) - 1;
+    if (resize_n_index < 0) {
+      return RET_ERROR;
+    }
+    for (auto i = resize_n_index; i >= 0; --i) {
       if (arithmetic_parameter_->in_shape0_[i] != arithmetic_parameter_->in_shape1_[i]) {
         break_pos_ = i;
         break;
diff --git a/mindspore/lite/micro/coder/opcoders/nnacl/int8/add_int8_coder.h b/mindspore/lite/micro/coder/opcoders/nnacl/int8/add_int8_coder.h
index 27eb507c8e..d6c4d6415f 100644
--- a/mindspore/lite/micro/coder/opcoders/nnacl/int8/add_int8_coder.h
+++ b/mindspore/lite/micro/coder/opcoders/nnacl/int8/add_int8_coder.h
@@ -38,7 +38,7 @@ class AddInt8Coder final : public OperatorCoder {
   int Init();
   int ReSize();
 
-  AddQuantParameter para_;
+  AddQuantParameter para_{};
   ArithmeticParameter *arith_para_{nullptr};
   Tensor *input0{nullptr};
   Tensor *input1{nullptr};
diff --git a/mindspore/lite/micro/coder/opcoders/nnacl/int8/div_int8_coder.cc b/mindspore/lite/micro/coder/opcoders/nnacl/int8/div_int8_coder.cc
index cbcf4530ae..0b362edbf0 100644
--- a/mindspore/lite/micro/coder/opcoders/nnacl/int8/div_int8_coder.cc
+++ b/mindspore/lite/micro/coder/opcoders/nnacl/int8/div_int8_coder.cc
@@ -54,7 +54,7 @@ int DivInt8Coder::DoCode(CoderContext *const context) {
   int element_num = output_tensor_->ElementsNum();
   code.CodeStruct("param", param_);
   if (broadcast_) {
-    ArithmeticParameter tile_para;
+    ArithmeticParameter tile_para = {0};
     tile_para.ndim_ = output_tensor_->shape().size();
     for (size_t i = 0; i < tile_para.ndim_; i++) {
       tile_para.in_shape0_[i] = input0->DimensionSize(i);
diff --git a/mindspore/lite/micro/coder/opcoders/nnacl/int8/div_int8_coder.h b/mindspore/lite/micro/coder/opcoders/nnacl/int8/div_int8_coder.h
index d648f040a7..ceccad806b 100644
--- a/mindspore/lite/micro/coder/opcoders/nnacl/int8/div_int8_coder.h
+++ b/mindspore/lite/micro/coder/opcoders/nnacl/int8/div_int8_coder.h
@@ -37,7 +37,7 @@ class DivInt8Coder final : public OperatorCoder {
   int DoCode(CoderContext *const context) override;
 
  private:
-  DivQuantArg param_;
+  DivQuantArg param_{};
   Tensor *input0{nullptr};
   Tensor *input1{nullptr};
   int8_t *tile0_data_{nullptr};
diff --git a/mindspore/lite/micro/coder/opcoders/nnacl/int8/relux_int8_coder.h b/mindspore/lite/micro/coder/opcoders/nnacl/int8/relux_int8_coder.h
index ff55311dfb..f42db86a03 100644
--- a/mindspore/lite/micro/coder/opcoders/nnacl/int8/relux_int8_coder.h
+++ b/mindspore/lite/micro/coder/opcoders/nnacl/int8/relux_int8_coder.h
@@ -39,10 +39,10 @@ class ReluxInt8Coder : public OperatorCoder {
   int DoCode(CoderContext *const context) override;
 
  protected:
-  ReluXQuantArg quant_arg_;
+  ReluXQuantArg quant_arg_{};
 
  private:
-  int type_;
+  int type_{0};
 };
 
 class ReluInt8Coder final : public ReluxInt8Coder {
diff --git a/mindspore/lite/micro/coder/opcoders/nnacl/int8/resize_int8_coder.cc b/mindspore/lite/micro/coder/opcoders/nnacl/int8/resize_int8_coder.cc
index ee109cc544..3a986050da 100644
--- a/mindspore/lite/micro/coder/opcoders/nnacl/int8/resize_int8_coder.cc
+++ b/mindspore/lite/micro/coder/opcoders/nnacl/int8/resize_int8_coder.cc
@@ -40,8 +40,16 @@ int ResizeInt8Coder::Prepare(CoderContext *const context) {
   quant_out_ = new (std::nothrow)::QuantArg;
   multiplier_ = new (std::nothrow) QuantMulArg;
   MS_CHECK_PTR(quant_in_);
-  MS_CHECK_PTR(quant_out_);
-  MS_CHECK_PTR(multiplier_);
+  if (quant_out_ == nullptr) {
+    delete quant_in_;
+    quant_in_ = nullptr;
+  }
+  if (multiplier_ == nullptr) {
+    delete quant_in_;
+    quant_in_ = nullptr;
+    delete quant_out_;
+    quant_out_ = nullptr;
+  }
   quant_in_->zp_ = input_tensor_->quant_params().at(0).zeroPoint;
   quant_in_->scale_ = input_tensor_->quant_params().at(0).scale;
   quant_out_->zp_ = output_tensor_->quant_params().at(0).zeroPoint;
diff --git a/mindspore/lite/micro/coder/opcoders/nnacl/int8/resize_int8_coder.h b/mindspore/lite/micro/coder/opcoders/nnacl/int8/resize_int8_coder.h
index ca849dfc58..19d3c4082c 100644
--- a/mindspore/lite/micro/coder/opcoders/nnacl/int8/resize_int8_coder.h
+++ b/mindspore/lite/micro/coder/opcoders/nnacl/int8/resize_int8_coder.h
@@ -29,7 +29,7 @@ class ResizeInt8Coder final : public ResizeBaseCoder {
                   const Model::Node *node, size_t node_index, Target target)
       : ResizeBaseCoder(in_tensors, out_tensors, node, node_index, target) {}
 
-  ~ResizeInt8Coder();
+  ~ResizeInt8Coder() override;
 
   int Prepare(CoderContext *const context) override;
 
@@ -37,23 +37,10 @@ class ResizeInt8Coder final : public ResizeBaseCoder {
 
  private:
   int ReSize();
-  int InitResizeBiLinear();
-  int InitFloatResizeBiLinear();
-  int InitResizeQuantArg();
-  int CalRatio();
-  int CalInterpolationRange();
-  void FreeResizeBiLinear();
-  int InitResizeFloatQuantArg();
-  int CalFloatRatio();
-  int CalFloatInterpolationRange();
-  void FreeFloatResizeBiLinear();
-
   ResizeParameter *param_{nullptr};
   ::QuantArg *quant_in_{nullptr};
   ::QuantArg *quant_out_{nullptr};
   QuantMulArg *multiplier_{nullptr};
-  ResizeQuantArg resize_quant_arg_;
-  ResizeFloatScaleQuantArg resize_float_quant_arg_;
 };
 
 }  // namespace mindspore::lite::micro::nnacl
diff --git a/mindspore/lite/micro/coder/opcoders/nnacl/int8/sub_int8_coder.h b/mindspore/lite/micro/coder/opcoders/nnacl/int8/sub_int8_coder.h
index aab1adf59f..fa34895bc5 100644
--- a/mindspore/lite/micro/coder/opcoders/nnacl/int8/sub_int8_coder.h
+++ b/mindspore/lite/micro/coder/opcoders/nnacl/int8/sub_int8_coder.h
@@ -37,7 +37,7 @@ class SubInt8Coder final : public OperatorCoder {
   int DoCode(CoderContext *const context) override;
 
  private:
-  SubQuantArg param_;
+  SubQuantArg param_{};
   Tensor *input0{nullptr};
   Tensor *input1{nullptr};
   int8_t *tile0_data_{nullptr};
diff --git a/mindspore/lite/micro/coder/wrapper/int8/conv1x1_init_int8_wrapper.c b/mindspore/lite/micro/coder/wrapper/int8/conv1x1_init_int8_wrapper.c
index 5f30d4bd10..959d03a8a3 100644
--- a/mindspore/lite/micro/coder/wrapper/int8/conv1x1_init_int8_wrapper.c
+++ b/mindspore/lite/micro/coder/wrapper/int8/conv1x1_init_int8_wrapper.c
@@ -15,7 +15,6 @@
  */
 
 #include "wrapper/int8/conv1x1_init_int8_wrapper.h"
-#include <memory.h>
 #include "nnacl/int8/matmul_int8.h"
 #include "nnacl/errorcode.h"