diff --git a/mindspore/lite/java/native/runtime/context.cpp b/mindspore/lite/java/native/runtime/context.cpp
index 921a547b9e..9b5576d34f 100644
--- a/mindspore/lite/java/native/runtime/context.cpp
+++ b/mindspore/lite/java/native/runtime/context.cpp
@@ -23,7 +23,11 @@ extern "C" JNIEXPORT jlong JNICALL Java_com_mindspore_lite_context_Context_creat
                                                                                           jint device_type,
                                                                                           jint thread_num,
                                                                                           jint cpu_bind_mode) {
-  auto *context = new mindspore::lite::Context();
+  auto *context = new (std::nothrow) mindspore::lite::Context();
+  if (context == nullptr) {
+    MS_LOG(ERROR) << "new Context fail!";
+    return (jlong)context;
+  }
   switch (device_type) {
     case 0:
       context->device_ctx_.type = mindspore::lite::DT_CPU;
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp16/convolution_sw_fp16.cc b/mindspore/lite/src/runtime/kernel/arm/fp16/convolution_sw_fp16.cc
index bb18df3494..1c3f28bee6 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp16/convolution_sw_fp16.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp16/convolution_sw_fp16.cc
@@ -172,7 +172,11 @@ int ConvolutionSWFP16CPUKernel::ReSize() {
   memset(nhwc4_input_, 0, nhwc4_input_size);
 
   // init sliding window param
-  slidingWindow_param_ = new SlidingWindowParam;
+  slidingWindow_param_ = new (std::nothrow) SlidingWindowParam;
+  if (slidingWindow_param_ == nullptr) {
+    MS_LOG(ERROR) << "new SlidingWindowParam fail!";
+    return RET_ERROR;
+  }
   InitSlidingParamConv(slidingWindow_param_, conv_param_, C4NUM);
   return RET_OK;
 }
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp16/convolution_winograd_fp16.cc b/mindspore/lite/src/runtime/kernel/arm/fp16/convolution_winograd_fp16.cc
index f04a77fc0b..dd3ece9e35 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp16/convolution_winograd_fp16.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp16/convolution_winograd_fp16.cc
@@ -166,7 +166,12 @@ int ConvolutionWinogradFP16CPUKernel::MallocFilterMatrix(int oc_block, int oc_bl
     return RET_ERROR;
   }
   memset(matrix_buffer, 0, trans_matrix_data_size);
-  trans_weight_ = new Matrix();
+  trans_weight_ = new (std::nothrow) Matrix();
+  if (trans_weight_ == nullptr) {
+    MS_LOG(ERROR) << "new Matrix fail!";
+    free(matrix_buffer);
+    return RET_ERROR;
+  }
   trans_weight_->SetData(matrix_buffer);
   trans_weight_->SetNDim(5);
 
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_depthwise_fp16.cc b/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_depthwise_fp16.cc
index a2a394cb49..146e130502 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_depthwise_fp16.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_depthwise_fp16.cc
@@ -130,7 +130,11 @@ int DeconvolutionDepthwiseFp16CPUKernel::Init() {
 int DeconvolutionDepthwiseFp16CPUKernel::ReSize() {
   FreeTmpBuffer();
 
-  sliding_ = new SlidingWindowParam;
+  sliding_ = new (std::nothrow) SlidingWindowParam;
+  if (sliding_ == nullptr) {
+    MS_LOG(ERROR) << "new SlidingWindowParam fail!";
+    return RET_ERROR;
+  }
   InitSlideParam();
   // conv base init
   auto ret = ConvolutionBaseCPUKernel::Init();
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_self.cc b/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_self.cc
index d2fb614130..61ff03393e 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_self.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_self.cc
@@ -99,7 +99,10 @@ kernel::LiteKernel *CpuArithmeticSelfFp32KernelCreator(const std::vector<lite::t
     return nullptr;
   }
   auto *kernel = new (std::nothrow) ArithmeticSelfCPUKernel(opParameter, inputs, outputs, ctx, primitive);
-  MS_ASSERT(kernel != nullptr);
+  if (kernel == nullptr) {
+    MS_LOG(ERROR) << "new ArithmeticSelfCPUKernel fail!";
+    return nullptr;
+  }
   auto ret = kernel->Init();
   if (ret != RET_OK) {
     MS_LOG(ERROR) << "Init kernel failed, name: " << opParameter->name_ << ", type: "
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_depthwise.cc b/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_depthwise.cc
index c0726fc2a3..7ee96c3793 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_depthwise.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_depthwise.cc
@@ -204,14 +204,6 @@ kernel::LiteKernel *CpuConvDwFp32KernelCreator(const std::vector<lite::tensor::T
   MS_ASSERT(desc.type == schema::PrimitiveType_DepthwiseConv2D);
   kernel::LiteKernel *kernel;
   kernel = new (std::nothrow) kernel::ConvolutionDepthwiseCPUKernel(opParameter, inputs, outputs, ctx, primitive);
-  //  auto param = reinterpret_cast<ConvParameter *>(opParameter);
-  //  if (param->kernel_h_ == 3 && param->kernel_w_ == 3 && param->stride_h_ == 1 && param->stride_w_ == 1 &&
-  //      param->dilation_h_ == 1 && param->dilation_w_ == 1) {
-  //    kernel = new (std::nothrow) kernel::ConvolutionDepthwise3x3CPUKernel(opParameter, inputs, outputs, ctx,
-  //    primitive);
-  //  } else {
-  //    kernel = new (std::nothrow) kernel::ConvolutionDepthwiseCPUKernel(opParameter, inputs, outputs, ctx, primitive);
-  //  }
 
   if (kernel == nullptr) {
     MS_LOG(ERROR) << "kernel is nullptr.";
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_slidewindow.cc b/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_slidewindow.cc
index e54377de43..82282d4c3c 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_slidewindow.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_slidewindow.cc
@@ -142,7 +142,11 @@ int ConvolutionSWCPUKernel::ReSize() {
   memset(nhwc4_input_, 0, nhwc4_input_size);
 
   // init sliding window param
-  slidingWindow_param_ = new SlidingWindowParam;
+  slidingWindow_param_ = new (std::nothrow) SlidingWindowParam;
+  if (slidingWindow_param_ == nullptr) {
+    MS_LOG(ERROR) << "new SlidingWindowParam fail!";
+    return RET_ERROR;
+  }
   InitSlidingParamConv(slidingWindow_param_, conv_param_, C4NUM);
 
   return RET_OK;
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_winograd.cc b/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_winograd.cc
index 916a186e5e..828d00884b 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_winograd.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/convolution_winograd.cc
@@ -145,7 +145,12 @@ int ConvolutionWinogradCPUKernel::MallocFilterMatrix(int oc_block, int oc_block_
     return RET_ERROR;
   }
   memset(matrix_buffer, 0, trans_matrix_data_size);
-  trans_weight_ = new Matrix();
+  trans_weight_ = new (std::nothrow) Matrix();
+  if (trans_weight_ == nullptr) {
+    MS_LOG(ERROR) << "new Matrix fail!";
+    free(matrix_buffer);
+    return RET_ERROR;
+  }
   trans_weight_->SetData(matrix_buffer);
   trans_weight_->SetNDim(5);
 
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/activation_grad.cc b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/activation_grad.cc
index d877009b31..a49dcc663b 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/activation_grad.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/activation_grad.cc
@@ -97,7 +97,10 @@ kernel::LiteKernel *CpuActivationGradFp32KernelCreator(const std::vector<lite::t
   MS_ASSERT(opParameter != nullptr);
   MS_ASSERT(desc.type == schema::PrimitiveType_ActivationGrad);
   auto *kernel = new (std::nothrow) ActivationGradCPUKernel(opParameter, inputs, outputs, ctx, primitive);
-  MS_ASSERT(kernel != nullptr);
+  if (kernel == nullptr) {
+    MS_LOG(ERROR) << "new ActivationGradCPUKernel fail!";
+    return nullptr;
+  }
   auto ret = kernel->Init();
   if (ret != RET_OK) {
     MS_LOG(ERROR) << "InferShape kernel failed, name: " << opParameter->name_ << ", type: "
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/arithmetic_grad.cc b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/arithmetic_grad.cc
index aaeca7c083..37fe1dbcac 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/arithmetic_grad.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/arithmetic_grad.cc
@@ -120,13 +120,27 @@ int ArithmeticGradCPUKernel::InferShape() {
         arithmeticParameter_->out_shape_[i] = outShape[i];
       }
     }
+
     tile_data0 = new (std::nothrow) float[inputs_.at(0)->ElementsNum()];
-    MS_ASSERT(tile_data0 != nullptr);
+    if (tile_data0 == nullptr) {
+      MS_LOG(ERROR) << "new data0 fail!";
+      return RET_ERROR;
+    }
     tile_data1 = new (std::nothrow) float[inputs_.at(0)->ElementsNum()];
-    MS_ASSERT(tile_data1 != nullptr);
+    if (tile_data1 == nullptr) {
+      MS_LOG(ERROR) << "new data1 fail!";
+      delete tile_data0;
+      return RET_ERROR;
+    }
+
     if (type() == PrimitiveType_DivGrad) {
       tile_data2 = new (std::nothrow) float[inputs_.at(0)->ElementsNum()];
-      MS_ASSERT(tile_data2 != nullptr);
+      if (tile_data2 == nullptr) {
+        MS_LOG(ERROR) << "new data2 fail!";
+        delete tile_data0;
+        delete tile_data1;
+        return RET_ERROR;
+      }
     }
   }
 
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/bn_grad.cc b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/bn_grad.cc
index e21ea12322..f9243aa080 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/bn_grad.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/bn_grad.cc
@@ -99,7 +99,10 @@ kernel::LiteKernel *CpuBNGradInputFp32KernelCreator(const std::vector<lite::tens
   //  parameter->name = opDef.name()->str().data();
   //  parameter->type = opDef.attr_type();
   auto *kernel = new (std::nothrow) BNGradInputCPUKernel(opParameter, inputs, outputs, ctx, primitive);
-  MS_ASSERT(kernel != nullptr);
+  if (kernel == nullptr) {
+    MS_LOG(ERROR) << "new BNGradInputCPUKernel fail!";
+    return nullptr;
+  }
   auto ret = kernel->Init();
   if (RET_OK != ret) {
     MS_LOG(ERROR) << "Init kernel failed, name: " << opParameter->name_ << ", type: "
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/convolution_grad_filter.cc b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/convolution_grad_filter.cc
index ee3f59972b..632187f29e 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/convolution_grad_filter.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/convolution_grad_filter.cc
@@ -141,7 +141,10 @@ kernel::LiteKernel *CpuConvGradFilterFp32KernelCreator(const std::vector<lite::t
   MS_ASSERT(desc.type == schema::PrimitiveType_Conv2DGradFilter);
 
   auto *kernel = new (std::nothrow) ConvolutionGradFilterCPUKernel(opParameter, inputs, outputs, ctx, primitive);
-  MS_ASSERT(kernel != nullptr);
+  if (kernel == nullptr) {
+    MS_LOG(ERROR) << "new kernel fail!";
+    return nullptr;
+  }
 
   auto ret = kernel->Init();
   if (RET_OK != ret) {
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/convolution_grad_input.cc b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/convolution_grad_input.cc
index 0c10a11b9f..d6d4896555 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32_grad/convolution_grad_input.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32_grad/convolution_grad_input.cc
@@ -63,7 +63,11 @@ int ConvolutionGradInputCPUKernel::Init() {
   int ws_size = conv_param->output_h_ * conv_param->output_w_ * conv_param->kernel_h_ * conv_param->kernel_w_ *
                 conv_param->input_channel_ / conv_param->group_;
 
-  workspace = new float[ws_size];
+  workspace = new (std::nothrow) float[ws_size];
+  if (workspace == nullptr) {
+    MS_LOG(ERROR) << "new workspace fail!";
+    return RET_ERROR;
+  }
   return 0;
 }
 
@@ -121,7 +125,10 @@ kernel::LiteKernel *CpuConvGradInputFp32KernelCreator(const std::vector<lite::te
   MS_ASSERT(desc.type == schema::PrimitiveType_Conv2DGradInput);
 
   auto *kernel = new (std::nothrow) ConvolutionGradInputCPUKernel(opParameter, inputs, outputs, ctx, primitive);
-  MS_ASSERT(kernel != nullptr);
+  if (kernel == nullptr) {
+    MS_LOG(ERROR) << "new kernel fail!";
+    return nullptr;
+  }
 
   auto ret = kernel->Init();
   if (0 != ret) {
diff --git a/mindspore/lite/src/runtime/kernel/arm/int8/arithmetic_self_int8.cc b/mindspore/lite/src/runtime/kernel/arm/int8/arithmetic_self_int8.cc
index 3079e3637d..1e38c06425 100644
--- a/mindspore/lite/src/runtime/kernel/arm/int8/arithmetic_self_int8.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/int8/arithmetic_self_int8.cc
@@ -122,8 +122,13 @@ kernel::LiteKernel *CpuArithmeticSelfInt8KernelCreator(const std::vector<lite::t
     MS_LOG(ERROR) << "Creator failed, opParameter is nullptr!";
     return nullptr;
   }
+
   auto *kernel = new (std::nothrow) ArithmeticSelfInt8CPUKernel(opParameter, inputs, outputs, ctx, primitive);
-  MS_ASSERT(kernel != nullptr);
+  if (kernel == nullptr) {
+    MS_LOG(ERROR) << "new ArithmeticSelfInt8CPUKernel fail!";
+    return nullptr;
+  }
+
   auto ret = kernel->Init();
   if (ret != RET_OK) {
     MS_LOG(ERROR) << "Init kernel failed, name: " << opParameter->name_ << ", type: "
diff --git a/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_depthwise_int8.cc b/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_depthwise_int8.cc
index a0099e5b1e..d1f40743c7 100644
--- a/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_depthwise_int8.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_depthwise_int8.cc
@@ -151,7 +151,12 @@ int DeconvolutionDepthwiseInt8CPUKernel::Init() {
 int DeconvolutionDepthwiseInt8CPUKernel::ReSize() {
   FreeTmpBuffer();
 
-  sliding = new SlidingWindowParam;
+  sliding = new (std::nothrow) SlidingWindowParam;
+  if (sliding == nullptr) {
+    MS_LOG(ERROR) << "new SlidingWindowParam fail!";
+    return RET_ERROR;
+  }
+
   InitSlideParam();
 
   // conv base init
diff --git a/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_int8.cc b/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_int8.cc
index 61a10a0144..1852050237 100644
--- a/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_int8.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_int8.cc
@@ -108,7 +108,11 @@ void DeConvInt8CPUKernel::CheckSupportOptimize() {
 }
 
 int DeConvInt8CPUKernel::InitParam() {
-  matmul_param_ = new MatMulParameter();
+  matmul_param_ = new (std::nothrow) MatMulParameter();
+  if (matmul_param_ == nullptr) {
+    MS_LOG(ERROR) << "new MatMulParameter fail!";
+    return RET_ERROR;
+  }
   matmul_param_->row_ = conv_param_->input_h_ * conv_param_->input_w_;
   matmul_param_->deep_ = conv_param_->input_channel_;
   matmul_param_->col_ = conv_param_->output_channel_ * conv_param_->kernel_h_ * conv_param_->kernel_w_;
@@ -121,6 +125,7 @@ int DeConvInt8CPUKernel::InitParam() {
   } else {
     /*todo */
   }
+
   return RET_OK;
 }
 
diff --git a/mindspore/lite/test/models_mindspore.cfg b/mindspore/lite/test/models_mindspore.cfg
index 802f5f33ee..f408c7ef61 100644
--- a/mindspore/lite/test/models_mindspore.cfg
+++ b/mindspore/lite/test/models_mindspore.cfg
@@ -1 +1,2 @@
 ssd.pb
+mobilenet_v2.pb
diff --git a/mindspore/lite/test/ut/src/runtime/kernel/arm/fp32/crop_fp32_test.cc b/mindspore/lite/test/ut/src/runtime/kernel/arm/fp32/crop_fp32_test.cc
index da4f4ba41b..5452e80f46 100644
--- a/mindspore/lite/test/ut/src/runtime/kernel/arm/fp32/crop_fp32_test.cc
+++ b/mindspore/lite/test/ut/src/runtime/kernel/arm/fp32/crop_fp32_test.cc
@@ -319,6 +319,4 @@ TEST_F(CropTestFp32, CropTest11) {
   std::cout << "\n";
   CompareOutputData(output, expect_out, kOutSize, 0.000001);
 }
-
 }  // namespace mindspore
-
diff --git a/mindspore/lite/test/ut/src/runtime/kernel/opencl/activation_tests.cc b/mindspore/lite/test/ut/src/runtime/kernel/opencl/activation_tests.cc
index 7a6a28bd03..2f9fd94767 100644
--- a/mindspore/lite/test/ut/src/runtime/kernel/opencl/activation_tests.cc
+++ b/mindspore/lite/test/ut/src/runtime/kernel/opencl/activation_tests.cc
@@ -90,6 +90,7 @@ kernel::ActivationOpenClKernel *create_kernel(lite::opencl::OpenCLAllocator *all
   if (kernel == nullptr) {
     delete param;
     MS_LOG(ERROR) << "Kernel:" << test_name << " create fail.";
+    delete param;
     return nullptr;
   }
   auto ret = kernel->Init();
@@ -97,6 +98,8 @@ kernel::ActivationOpenClKernel *create_kernel(lite::opencl::OpenCLAllocator *all
     delete param;
     delete kernel;
     MS_LOG(ERROR) << "Init " << test_name << " fail.";
+    delete kernel;
+    delete param;
     return nullptr;
   }
   MS_LOG(INFO) << "Initialize input data";
diff --git a/mindspore/lite/test/ut/src/runtime/kernel/opencl/arithmetic_tests.cc b/mindspore/lite/test/ut/src/runtime/kernel/opencl/arithmetic_tests.cc
index b3cec80bd1..4c068c8b82 100644
--- a/mindspore/lite/test/ut/src/runtime/kernel/opencl/arithmetic_tests.cc
+++ b/mindspore/lite/test/ut/src/runtime/kernel/opencl/arithmetic_tests.cc
@@ -195,7 +195,7 @@ void TestCase(const std::vector<int> &shape_a, const std::vector<int> &shape_b)
 
   delete kernel;
   delete arith_kernel;
-
+  delete param;
   for (auto tensor : inputs) {
     delete tensor;
   }
diff --git a/mindspore/lite/test/ut/src/runtime/kernel/opencl/avg_pooling_tests.cc b/mindspore/lite/test/ut/src/runtime/kernel/opencl/avg_pooling_tests.cc
index 150d8efa26..1774875d1d 100644
--- a/mindspore/lite/test/ut/src/runtime/kernel/opencl/avg_pooling_tests.cc
+++ b/mindspore/lite/test/ut/src/runtime/kernel/opencl/avg_pooling_tests.cc
@@ -142,6 +142,7 @@ TEST_F(TestAvgPoolingOpenCL, AvgPoolFp32) {
   delete tensor_out;
   delete pooling_kernel;
   delete pGraph;
+  delete param;
   lite::opencl::OpenCLRuntime::DeleteInstance();
 }
 
diff --git a/mindspore/lite/test/ut/tools/optimizer/fusion/conv_scale_fusion_test.cc b/mindspore/lite/test/ut/tools/optimizer/fusion/conv_scale_fusion_test.cc
index 06f47ed5a3..8ae10d5d95 100644
--- a/mindspore/lite/test/ut/tools/optimizer/fusion/conv_scale_fusion_test.cc
+++ b/mindspore/lite/test/ut/tools/optimizer/fusion/conv_scale_fusion_test.cc
@@ -203,6 +203,7 @@ TEST_F(ConvScaleFusionTest, TestConvScaleNode) {
   for (auto &cnode : new_meta_graph->nodes) {
     ASSERT_EQ(cnode->primitive->value.AsConv2D()->hasBias, true);
   }
+  delete anf_transform;
 }
 
 TEST_F(ConvScaleFusionTest, TestDeptiwiseConvScaleNode) {
@@ -217,5 +218,6 @@ TEST_F(ConvScaleFusionTest, TestDeptiwiseConvScaleNode) {
     ASSERT_EQ(cnode->primitive->value.AsDepthwiseConv2D()->hasBias, true);
     ASSERT_EQ(cnode->inputIndex.size(), 3);
   }
+  delete anf_transform;
 }
 }  // namespace mindspore