diff --git a/mindspore/lite/nnacl/fp32/arithmetic_fp32.c b/mindspore/lite/nnacl/fp32/arithmetic_fp32.c
index acfbf32106..37d7b9d303 100644
--- a/mindspore/lite/nnacl/fp32/arithmetic_fp32.c
+++ b/mindspore/lite/nnacl/fp32/arithmetic_fp32.c
@@ -725,6 +725,22 @@ int ElementSub(const float *input0, const float *input1, float *output, const in
   return NNACL_OK;
 }
 
+int ElementSubInt(const int *input0, const int *input1, int *output, const int element_size) {
+  int index = 0;
+#ifdef ENABLE_NEON
+  for (; index <= element_size - 4; index += C4NUM) {
+    int32x4_t vin0 = vld1q_s32(input0 + index);
+    int32x4_t vin1 = vld1q_s32(input1 + index);
+    int32x4_t vout = vsubq_s32(vin0, vin1);
+    vst1q_s32(output + index, vout);
+  }
+#endif
+  for (; index < element_size; index++) {
+    output[index] = input0[index] - input1[index];
+  }
+  return NNACL_OK;
+}
+
 int ElementSubRelu(const float *input0, const float *input1, float *output, const int element_size) {
   int index = 0;
 #ifdef ENABLE_NEON
diff --git a/mindspore/lite/nnacl/fp32/arithmetic_fp32.h b/mindspore/lite/nnacl/fp32/arithmetic_fp32.h
index 0ca64c2a62..f7030e2ee5 100644
--- a/mindspore/lite/nnacl/fp32/arithmetic_fp32.h
+++ b/mindspore/lite/nnacl/fp32/arithmetic_fp32.h
@@ -77,6 +77,7 @@ int BroadcastAddInt8(const int8_t *input0, const int8_t *input1, int8_t *tile_in
                      int8_t *output, int element_size, ArithmeticParameter *param);
 
 int ElementSub(const float *input0, const float *input1, float *output, const int element_size);
+int ElementSubInt(const int *input0, const int *input1, int *output, const int element_size);
 int ElementSubRelu(const float *input0, const float *input1, float *output, const int element_size);
 int ElementSubRelu6(const float *input0, const float *input1, float *output, const int element_size);
 int BroadcastSub(const float *input0, const float *input1, float *tile_input0, float *tile_input1, float *output,
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.cc b/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.cc
index 5587725093..b802488a0e 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.cc
@@ -363,6 +363,8 @@ REG_KERNEL(kCPU, kNumberTypeFloat32, PrimitiveType_Add, CpuArithmeticFp32KernelC
 REG_KERNEL(kCPU, kNumberTypeInt, PrimitiveType_Add, CpuArithmeticFp32KernelCreator)
 REG_KERNEL(kCPU, kNumberTypeInt32, PrimitiveType_Add, CpuArithmeticFp32KernelCreator)
 REG_KERNEL(kCPU, kNumberTypeFloat32, PrimitiveType_Sub, CpuArithmeticFp32KernelCreator)
+REG_KERNEL(kCPU, kNumberTypeInt, PrimitiveType_Sub, CpuArithmeticFp32KernelCreator)
+REG_KERNEL(kCPU, kNumberTypeInt32, PrimitiveType_Sub, CpuArithmeticFp32KernelCreator)
 REG_KERNEL(kCPU, kNumberTypeFloat32, PrimitiveType_Div, CpuArithmeticFp32KernelCreator)
 REG_KERNEL(kCPU, kNumberTypeFloat32, PrimitiveType_RealDiv, CpuArithmeticFp32KernelCreator)
 REG_KERNEL(kCPU, kNumberTypeFloat32, PrimitiveType_LogicalAnd, CpuArithmeticFp32KernelCreator)
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.h b/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.h
index b20a06043d..3908058fcf 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.h
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.h
@@ -97,6 +97,7 @@ class ArithmeticCPUKernel : public LiteKernel {
             break;
           default:
             arithmetic_run_ = ElementSub;
+            arithmetic_run_int_ = ElementSubInt;
             break;
         }
         break;
diff --git a/mindspore/lite/tools/common/graph_util.cc b/mindspore/lite/tools/common/graph_util.cc
index dc16534641..30632ee916 100644
--- a/mindspore/lite/tools/common/graph_util.cc
+++ b/mindspore/lite/tools/common/graph_util.cc
@@ -285,9 +285,9 @@ STATUS RemoveTensor(schema::MetaGraphT *graphT, std::vector<uint32_t> toDeleteTe
       }
     }
     // update nodes indexes
-    for (auto nodeIter = graphT->nodes.begin(); nodeIter != graphT->nodes.end(); nodeIter++) {
+    for (auto node_iter = graphT->nodes.begin(); node_iter != graphT->nodes.end(); node_iter++) {
       // update nodes input indexes
-      UpdateNodeIndex((*nodeIter).get(), deleteIdx);
+      UpdateNodeIndex((*node_iter).get(), deleteIdx);
     }
     // update deleteTensorIdx
     for (auto selfIt = toDeleteTensorIdxes.begin(); selfIt != toDeleteTensorIdxes.end(); selfIt++) {
@@ -374,10 +374,10 @@ NodeIter InsertNode(schema::MetaGraphT *graphT, uint32_t existNodeIdx, InsertPla
     MS_LOG(ERROR) << "nodeIdx out of range: " << existNodeIdx;
     return graphT->nodes.end();
   }
-  auto nodeIter = graphT->nodes.begin() + existNodeIdx;
-  MS_ASSERT(nodeIter != graphT->nodes.begin());
-  MS_ASSERT((*nodeIter) != nullptr);
-  return InsertNode(graphT, nodeIter, place, inoutIndex, std::move(toAddNode), errorCode);
+  auto node_iter = graphT->nodes.begin() + existNodeIdx;
+  MS_ASSERT(node_iter != graphT->nodes.begin());
+  MS_ASSERT((*node_iter) != nullptr);
+  return InsertNode(graphT, node_iter, place, inoutIndex, std::move(toAddNode), errorCode);
 }
 
 NodeIter InsertNode(schema::MetaGraphT *graphT, NodeIter existNodeIter, InsertPlace place, size_t inoutIndexIdx,
diff --git a/mindspore/lite/tools/converter/parser/onnx/onnx_conv_parser.cc b/mindspore/lite/tools/converter/parser/onnx/onnx_conv_parser.cc
index 3bf5013748..b4944a93d1 100644
--- a/mindspore/lite/tools/converter/parser/onnx/onnx_conv_parser.cc
+++ b/mindspore/lite/tools/converter/parser/onnx/onnx_conv_parser.cc
@@ -131,33 +131,33 @@ STATUS OnnxConvParser::Parse(const onnx::GraphProto &onnx_graph, const onnx::Nod
 
   const auto &onnx_conv_weight = onnx_node.input(1);
   if (onnx_node.op_type() == "Conv") {
-    auto nodeIter =
+    auto node_iter =
       std::find_if(onnx_graph.initializer().begin(), onnx_graph.initializer().end(),
                    [onnx_conv_weight](const onnx::TensorProto &proto) { return proto.name() == onnx_conv_weight; });
-    if (nodeIter == onnx_graph.initializer().end()) {
+    if (node_iter == onnx_graph.initializer().end()) {
       MS_LOG(WARNING) << "not find node: " << onnx_conv_weight;
     } else {
       std::vector<int> weight_shape;
-      auto size = (*nodeIter).dims_size();
+      auto size = (*node_iter).dims_size();
       weight_shape.reserve(size);
       for (int i = 0; i < size; ++i) {
-        weight_shape.emplace_back((*nodeIter).dims(i));
+        weight_shape.emplace_back((*node_iter).dims(i));
       }
       attr->channelOut = weight_shape[0];
       attr->channelIn = weight_shape[1] * attr->group;
     }
   } else {
-    auto nodeIter =
+    auto node_iter =
       std::find_if(onnx_graph.node().begin(), onnx_graph.node().end(),
                    [onnx_conv_weight](const onnx::NodeProto &proto) { return proto.output(0) == onnx_conv_weight; });
-    if (nodeIter == onnx_graph.node().end()) {
+    if (node_iter == onnx_graph.node().end()) {
       MS_LOG(ERROR) << "can not find node: " << onnx_conv_weight;
       return RET_ERROR;
     }
     std::vector<int> dims;
-    auto iter = std::find_if((*nodeIter).attribute().begin(), (*nodeIter).attribute().end(),
+    auto iter = std::find_if((*node_iter).attribute().begin(), (*node_iter).attribute().end(),
                              [](const onnx::AttributeProto &attr) { return attr.name() == "shape"; });
-    if (iter != (*nodeIter).attribute().end()) {
+    if (iter != (*node_iter).attribute().end()) {
       if (iter->ints().begin() == nullptr || iter->ints().end() == nullptr) {
         MS_LOG(ERROR) << "dims insert failed";
         return RET_ERROR;
diff --git a/mindspore/lite/tools/converter/parser/onnx/onnx_deconv_parser.cc b/mindspore/lite/tools/converter/parser/onnx/onnx_deconv_parser.cc
index b966a8fd5d..268129438e 100644
--- a/mindspore/lite/tools/converter/parser/onnx/onnx_deconv_parser.cc
+++ b/mindspore/lite/tools/converter/parser/onnx/onnx_deconv_parser.cc
@@ -133,18 +133,18 @@ STATUS OnnxDeConvParser::Parse(const onnx::GraphProto &onnx_graph, const onnx::N
   }
 
   const auto &onnx_conv_weight = onnx_node.input(1);
-  auto nodeIter =
+  auto node_iter =
     std::find_if(onnx_graph.initializer().begin(), onnx_graph.initializer().end(),
                  [onnx_conv_weight](const onnx::TensorProto &proto) { return proto.name() == onnx_conv_weight; });
-  if (nodeIter == onnx_graph.initializer().end()) {
+  if (node_iter == onnx_graph.initializer().end()) {
     MS_LOG(ERROR) << "not find node: " << onnx_conv_weight.c_str();
     return RET_ERROR;
   }
   std::vector<int> weight_shape;
-  auto size = (*nodeIter).dims_size();
+  auto size = (*node_iter).dims_size();
   weight_shape.reserve(size);
   for (int i = 0; i < size; ++i) {
-    weight_shape.emplace_back((*nodeIter).dims(i));
+    weight_shape.emplace_back((*node_iter).dims(i));
   }
   if (weight_shape.size() != 4) {
     MS_LOG(ERROR) << "weight_shape.size() should be 4, but is " << weight_shape.size();
diff --git a/mindspore/lite/tools/converter/parser/onnx/onnx_expand_parser.cc b/mindspore/lite/tools/converter/parser/onnx/onnx_expand_parser.cc
index 46fb4288ec..87414ae823 100644
--- a/mindspore/lite/tools/converter/parser/onnx/onnx_expand_parser.cc
+++ b/mindspore/lite/tools/converter/parser/onnx/onnx_expand_parser.cc
@@ -41,14 +41,14 @@ STATUS OnnxExpandParser::Parse(const onnx::GraphProto &onnx_graph, const onnx::N
 
   std::vector<int> dst_shape;
   const auto &onnx_expand_power = onnx_node.input(1);
-  auto nodeIter =
+  auto node_iter =
     std::find_if(onnx_graph.node().begin(), onnx_graph.node().end(),
                  [onnx_expand_power](const onnx::NodeProto &proto) { return proto.output(0) == onnx_expand_power; });
-  if (nodeIter == onnx_graph.node().end()) {
+  if (node_iter == onnx_graph.node().end()) {
     MS_LOG(ERROR) << "can not find node: " << onnx_expand_power;
     return RET_ERROR;
   }
-  for (const auto &attrPower : nodeIter->attribute()) {
+  for (const auto &attrPower : node_iter->attribute()) {
     if (attrPower.name() == "value") {
       const auto &t = attrPower.t();
       auto *dataPtr = reinterpret_cast<const int64_t *>(t.raw_data().data());