diff --git a/mindspore/lite/nnacl/fp32/resize.c b/mindspore/lite/nnacl/fp32/resize.c
index 0953631347..39465783eb 100644
--- a/mindspore/lite/nnacl/fp32/resize.c
+++ b/mindspore/lite/nnacl/fp32/resize.c
@@ -91,13 +91,13 @@ int ResizeBilinear(const float *input_data, float *output_data, const int *input
     int y_bottom = y_bottoms[h];
     int y_top = y_tops[h];
     float y_bottom_weight = y_bottom_weights[h];
-    float y_top_weight = 1.0f - y_bottom_weight;
+    const float y_top_weight = 1.0f - y_bottom_weight;
 
     for (w = 0; w < new_width; w++) {
       int x_left = x_lefts[w];
       int x_right = x_rights[w];
       float x_left_weight = x_left_weights[w];
-      float x_right_weight = 1.0f - x_left_weight;
+      const float x_right_weight = 1.0f - x_left_weight;
       float top_left_weight = y_top_weight * x_left_weight;
       float top_right_weight = y_top_weight * x_right_weight;
       float bottom_left_weight = y_bottom_weight * x_left_weight;
diff --git a/mindspore/lite/nnacl/fp32/roi_pooling.c b/mindspore/lite/nnacl/fp32/roi_pooling.c
index 1f4f1b9839..26f5ff8481 100644
--- a/mindspore/lite/nnacl/fp32/roi_pooling.c
+++ b/mindspore/lite/nnacl/fp32/roi_pooling.c
@@ -41,6 +41,7 @@ int ROIPooling(float *in_ptr, float *out_ptr, float *roi, int tid, ROIPoolingPar
   for (int i = roi_st; i < roi_end; ++i) {
     int roi_batch_ind = (int)roi[roi_ind_st];  // batch_index
     if (roi_batch_ind >= batch_size) {
+      free(max_c);
       return NNACL_ERRCODE_INDEX_OUT_OF_RANGE;
     }
     int roi_start_h = (int)roundf(roi[roi_ind_st + 1] * scale);  // top-left x1
diff --git a/mindspore/lite/nnacl/int8/leaky_relu_int8.c b/mindspore/lite/nnacl/int8/leaky_relu_int8.c
index 540a7f898a..7498b8120b 100644
--- a/mindspore/lite/nnacl/int8/leaky_relu_int8.c
+++ b/mindspore/lite/nnacl/int8/leaky_relu_int8.c
@@ -15,17 +15,21 @@
  */
 
 #include "nnacl/int8/leaky_relu_int8.h"
+#include "nnacl/errorcode.h"
 
-void DoLeakReluInt8(int8_t *inputs, int8_t *output_ptr, LeakyReluQuantArg *quant_prelu_parm, int task_id) {
+int DoLeakReluInt8(int8_t *inputs, int8_t *output_ptr, LeakyReluQuantArg *quant_prelu_parm, int task_id) {
   if (quant_prelu_parm == NULL) {
-    return;
+    return NNACL_NULL_PTR;
   }
   float output_scale = quant_prelu_parm->quant_arg.out_args_.scale_;
   int output_zp = quant_prelu_parm->quant_arg.out_args_.zp_;
   const float output_inverse_scale = 1.f / output_scale;
   int output_dim = quant_prelu_parm->input_dim_;
 
-  QuantArg *input_quant = NULL;
+  QuantArg *input_quant = malloc(sizeof(QuantArg)*output_dim);
+  if (input_quant == NULL) {
+    return NNACL_NULL_PTR;
+  }
   for (int i = 0; i < output_dim; i++) {
     input_quant[i].scale_ = quant_prelu_parm->quant_arg.in_args_.scale_;
     input_quant[i].zp_ = quant_prelu_parm->quant_arg.in_args_.zp_;
@@ -56,4 +60,6 @@ void DoLeakReluInt8(int8_t *inputs, int8_t *output_ptr, LeakyReluQuantArg *quant
       }
     }
   }
+  free(input_quant);
+  return NNACL_OK;
 }
diff --git a/mindspore/lite/nnacl/int8/leaky_relu_int8.h b/mindspore/lite/nnacl/int8/leaky_relu_int8.h
index 89208bb655..afe8c1934f 100644
--- a/mindspore/lite/nnacl/int8/leaky_relu_int8.h
+++ b/mindspore/lite/nnacl/int8/leaky_relu_int8.h
@@ -23,7 +23,7 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-void DoLeakReluInt8(int8_t *inputs, int8_t *output_ptr, LeakyReluQuantArg *quant_Prelu_parm, int task_id);
+int DoLeakReluInt8(int8_t *inputs, int8_t *output_ptr, LeakyReluQuantArg *quant_Prelu_parm, int task_id);
 #ifdef __cplusplus
 }
 #endif
diff --git a/mindspore/lite/nnacl/int8/resize.c b/mindspore/lite/nnacl/int8/resize.c
index 9c7bcdee1b..2f10130738 100644
--- a/mindspore/lite/nnacl/int8/resize.c
+++ b/mindspore/lite/nnacl/int8/resize.c
@@ -101,8 +101,14 @@ int ResizeBilinearInt8WithFloatWeight(const int8_t *input_data, int8_t *output_d
   int32_t new_height = output_shape[1];
   int32_t new_width = output_shape[2];
   float height_scale, width_scale;
-  ComputeScaleFloat(in_h, new_height, align_corners, &height_scale);
-  ComputeScaleFloat(in_w, new_width, align_corners, &width_scale);
+  int ret = ComputeScaleFloat(in_h, new_height, align_corners, &height_scale);
+  if (ret != NNACL_OK) {
+    return ret;
+  }
+  ret = ComputeScaleFloat(in_w, new_width, align_corners, &width_scale);
+  if (ret != NNACL_OK) {
+    return ret;
+  }
 
   int n, h, w, c;
   for (n = 0; n < in_n; n++) {
@@ -189,11 +195,15 @@ void ComputeInterpolationArgs(const int32_t pos, const int32_t scale, const int3
   *scaled_high_weight = *scaled_pos - (1 << 10) * (*low);
 }
 
-void ComputeScaleFloat(const int32_t in_value, const int32_t out_value, const bool align_corners, float *scale) {
+int ComputeScaleFloat(const int32_t in_value, const int32_t out_value, const bool align_corners, float *scale) {
+  if (out_value == 0) {
+    return NNACL_ERRCODE_DIVISOR_ZERO;
+  }
   *scale = (float)in_value / out_value;
   if (align_corners && out_value > 1) {
     *scale = (float)(in_value - 1) / (out_value - 1);
   }
+  return NNACL_OK;
 }
 
 void ComputeInterpolationArgsFloatWeight(const int32_t pos, const float scale, const int32_t size, float *actual_pos,
diff --git a/mindspore/lite/nnacl/int8/resize.h b/mindspore/lite/nnacl/int8/resize.h
index 67a56da8c0..d13c78c90c 100644
--- a/mindspore/lite/nnacl/int8/resize.h
+++ b/mindspore/lite/nnacl/int8/resize.h
@@ -40,7 +40,7 @@ void ComputeScale(const int32_t in_value, const int32_t out_value, const bool al
 void ComputeInterpolationArgs(const int32_t pos, const int32_t scale, const int32_t size, int32_t *scaled_pos,
                               int32_t *low, int32_t *scaled_low_weight, int32_t *high, int32_t *scaled_high_weight);
 
-void ComputeScaleFloat(const int32_t in_value, const int32_t out_value, const bool align_corners, float *scale);
+int ComputeScaleFloat(const int32_t in_value, const int32_t out_value, const bool align_corners, float *scale);
 
 void ComputeInterpolationArgsFloatWeight(const int32_t pos, const float scale, const int32_t size, float *actual_pos,
                                          int32_t *low, float *low_weight, int32_t *high, float *high_weight);
diff --git a/mindspore/lite/src/runtime/kernel/arm/base/convolution_base.cc b/mindspore/lite/src/runtime/kernel/arm/base/convolution_base.cc
index 84addcaa2f..909e05620b 100644
--- a/mindspore/lite/src/runtime/kernel/arm/base/convolution_base.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/base/convolution_base.cc
@@ -352,6 +352,7 @@ int ConvolutionBaseCPUKernel::RestoreFilter(lite::tensor::Tensor *input_tensor)
     size_t channels = static_cast<size_t>(input_tensor->Batch());
     if (input_tensor->GetQuantParams().size() != channels) {
       MS_LOG(ERROR) << "Quant param not equal channel num " << input_tensor->GetQuantParams().size() << channels;
+      free(dequant_data);
       return RET_ERROR;
     }
     size_t per_channel_size = input_tensor->DataSize() / channels;
diff --git a/mindspore/lite/src/runtime/kernel/arm/int8/leaky_relu_int8.cc b/mindspore/lite/src/runtime/kernel/arm/int8/leaky_relu_int8.cc
index af6b6fd94e..d38e16c517 100644
--- a/mindspore/lite/src/runtime/kernel/arm/int8/leaky_relu_int8.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/int8/leaky_relu_int8.cc
@@ -20,6 +20,7 @@
 #include "src/runtime/runtime_api.h"
 #include "src/kernel_registry.h"
 #include "include/errorcode.h"
+#include "nnacl/errorcode.h"
 
 using mindspore::kernel::KERNEL_ARCH::kCPU;
 using mindspore::lite::KernelRegistrar;
@@ -105,7 +106,11 @@ int LeakyReluInt8CPUKernel::DoExecute(int task_id) {
   auto out_tensor = out_tensors_.at(kOutputIndex);
   int8_t *input_data = reinterpret_cast<int8_t *>(input_tensor->Data());
   int8_t *output_data = reinterpret_cast<int8_t *>(out_tensor->Data());
-  DoLeakReluInt8(input_data, output_data, &quant_prelu_parm_, task_id);
+  auto ret = DoLeakReluInt8(input_data, output_data, &quant_prelu_parm_, task_id);
+  if (ret != NNACL_OK) {
+    MS_LOG(ERROR) << "DoLeakReluInt8 failed";
+    return RET_ERROR;
+  }
   return RET_OK;
 }
 
diff --git a/mindspore/lite/src/runtime/thread_pool.c b/mindspore/lite/src/runtime/thread_pool.c
index ed4656b469..5f134ff702 100644
--- a/mindspore/lite/src/runtime/thread_pool.c
+++ b/mindspore/lite/src/runtime/thread_pool.c
@@ -500,12 +500,11 @@ int DistributeTask(int thread_pool_id, Task *task, int task_num) {
     } while (!k_success_flag);
   }
   // master thread
-  task->func(task->content, size - 1);
   if (task->func == NULL) {
     LOG_ERROR("task->func is nullptr");
     return RET_TP_ERROR;
   }
-
+  task->func(task->content, size - 1);
   // wait
   WaitAllThread(thread_pool_id);
   return RET_TP_OK;
@@ -547,11 +546,11 @@ void ThreadRun(Thread *thread) {
   while (thread_pool->is_alive) {
     while (thread->activate) {
       if (PopTaskFromQueue(thread, &task)) {
-        task->func(task->content, thread_id);
         if (task->func == NULL) {
           LOG_ERROR("task->func is nullptr");
           return;
         }
+        task->func(task->content, thread_id);
         atomic_fetch_sub_explicit(&thread->task_size, 1, memory_order_relaxed);
         // atomic_store_explicit(&thread->task_size, thread->task_size - 1, memory_order_relaxed);
         spin_count = 0;
diff --git a/model_zoo/official/lite/image_classification/app/src/main/cpp/MSNetWork.cpp b/model_zoo/official/lite/image_classification/app/src/main/cpp/MSNetWork.cpp
index acf087a07d..e5ddf6b31b 100644
--- a/model_zoo/official/lite/image_classification/app/src/main/cpp/MSNetWork.cpp
+++ b/model_zoo/official/lite/image_classification/app/src/main/cpp/MSNetWork.cpp
@@ -54,6 +54,8 @@ int MSNetWork::ReleaseNets(void) {
   return 0;
 }
 
+const int MSNetWork::RET_CATEGORY_SUM = 601;
+
 const char *MSNetWork::labels_name_map[MSNetWork::RET_CATEGORY_SUM] = {
     {"Tortoise"}, {"Container"}, {"Magpie"}, {"Seaturtle"}, {"Football"}, {"Ambulance"}, {"Ladder"},
     {"Toothbrush"}, {"Syringe"}, {"Sink"}, {"Toy"}, {"Organ(MusicalInstrument) "}, {"Cassettedeck"},
diff --git a/model_zoo/official/lite/image_classification/app/src/main/cpp/MSNetWork.h b/model_zoo/official/lite/image_classification/app/src/main/cpp/MSNetWork.h
index 27da5f5dfa..d1c3dbace0 100644
--- a/model_zoo/official/lite/image_classification/app/src/main/cpp/MSNetWork.h
+++ b/model_zoo/official/lite/image_classification/app/src/main/cpp/MSNetWork.h
@@ -32,7 +32,6 @@
 #include <memory>
 #include <utility>
 
-
 struct ImgDims {
   int channel = 0;
   int width = 0;
@@ -43,8 +42,6 @@ struct ImgDims {
     std::shared_ptr<mindspore::session::LiteSession> sess = nullptr;
 };*/
 
-
-
 class MSNetWork {
  public:
   MSNetWork();
@@ -55,10 +52,10 @@ class MSNetWork {
 
   int ReleaseNets(void);
 
+ private:
   mindspore::session::LiteSession *session;
   mindspore::lite::Model *model;
-  static const int RET_CATEGORY_SUM = 601;
+  static const int RET_CATEGORY_SUM;
   static const char *labels_name_map[RET_CATEGORY_SUM];
 };
-
 #endif
diff --git a/model_zoo/official/lite/image_classification/app/src/main/cpp/MindSporeNetnative.cpp b/model_zoo/official/lite/image_classification/app/src/main/cpp/MindSporeNetnative.cpp
index fdf2e1c827..f58394c0bd 100644
--- a/model_zoo/official/lite/image_classification/app/src/main/cpp/MindSporeNetnative.cpp
+++ b/model_zoo/official/lite/image_classification/app/src/main/cpp/MindSporeNetnative.cpp
@@ -76,10 +76,10 @@ cv::Mat PreProcessImageData(cv::Mat input) {
 
   imgFloatTmp.convertTo(imgResized256, CV_32FC3, normalizMin / normalizMax);
 
-  int offsetX = 16;
-  int offsetY = 16;
-  int cropWidth = 224;
-  int cropHeight = 224;
+  const int offsetX = 16;
+  const int offsetY = 16;
+  const int cropWidth = 224;
+  const int cropHeight = 224;
 
   // Standardization processing.
   float meanR = 0.485;