diff --git a/build.sh b/build.sh
index a4402f03dd..094f0d1de1 100755
--- a/build.sh
+++ b/build.sh
@@ -616,7 +616,7 @@ build_lite()
               -DANDROID_STL="c++_shared" -DCMAKE_BUILD_TYPE=${BUILD_TYPE}                                                      \
               -DBUILD_DEVICE=on -DPLATFORM_ARM32=on -DENABLE_NEON=on -DSUPPORT_TRAIN=${SUPPORT_TRAIN} -DBUILD_CONVERTER=off    \
               -DSUPPORT_GPU=${ENABLE_GPU} -DOFFLINE_COMPILE=${OPENCL_OFFLINE_COMPILE} -DBUILD_MINDDATA=${COMPILE_MINDDATA_LITE} \
-               -DCMAKE_INSTALL_PREFIX=${BASEPATH}/output/tmp "${BASEPATH}/mindspore/lite"
+              -DCMAKE_INSTALL_PREFIX=${BASEPATH}/output/tmp "${BASEPATH}/mindspore/lite"
     else
         cmake -DBUILD_DEVICE=on -DPLATFORM_ARM64=off -DBUILD_CONVERTER=${ENABLE_CONVERTER} -DSUPPORT_TRAIN=${SUPPORT_TRAIN}   \
         -DCMAKE_BUILD_TYPE=${BUILD_TYPE} -DSUPPORT_GPU=${ENABLE_GPU} -DBUILD_MINDDATA=${COMPILE_MINDDATA_LITE} \
diff --git a/mindspore/lite/src/ops/addn.cc b/mindspore/lite/src/ops/addn.cc
index 91ad51afc7..5795384365 100644
--- a/mindspore/lite/src/ops/addn.cc
+++ b/mindspore/lite/src/ops/addn.cc
@@ -48,7 +48,7 @@ int AddN::InferShape(std::vector<tensor::Tensor *> inputs, std::vector<tensor::T
   if (!GetInferFlag()) {
     return RET_OK;
   }
-  for (int i = 1; i < inputs.size(); ++i) {
+  for (size_t i = 1; i < inputs.size(); ++i) {
     if (inputs.at(i)->shape() != inputs.at(0)->shape()) {
       MS_LOG(ERROR) << "AddN inputs shape is not equal!";
       return RET_INPUT_TENSOR_ERROR;
diff --git a/mindspore/lite/src/ops/argmax.cc b/mindspore/lite/src/ops/argmax.cc
index 703e970ffd..9d7a7d225f 100644
--- a/mindspore/lite/src/ops/argmax.cc
+++ b/mindspore/lite/src/ops/argmax.cc
@@ -63,7 +63,7 @@ int ArgMax::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor
   }
   std::vector<int> output_shape(input->shape());
   auto input_shape_size = input->shape().size();
-  int axis = GetAxis() < 0 ? GetAxis() + input_shape_size : GetAxis();
+  auto axis = GetAxis() < 0 ? GetAxis() + input_shape_size : GetAxis();
   if (axis >= input_shape_size || axis < 0) {
     MS_LOG(ERROR) << "Invalid axis " << GetAxis() << ", input shape size: " << input_shape_size;
     return RET_PARAM_INVALID;
diff --git a/mindspore/lite/src/ops/argmin.cc b/mindspore/lite/src/ops/argmin.cc
index 349418a0b4..e9d4599558 100644
--- a/mindspore/lite/src/ops/argmin.cc
+++ b/mindspore/lite/src/ops/argmin.cc
@@ -61,7 +61,7 @@ int ArgMin::InferShape(std::vector<lite::tensor::Tensor *> inputs_, std::vector<
     return RET_OK;
   }
   auto input_shape_size = input->shape().size();
-  int axis = GetAxis() < 0 ? GetAxis() + input_shape_size : GetAxis();
+  auto axis = GetAxis() < 0 ? GetAxis() + input_shape_size : GetAxis();
   if (axis >= input_shape_size || axis < 0) {
     MS_LOG(ERROR) << "Invalid axis " << GetAxis() << ", input shape size: " << input_shape_size;
     return RET_PARAM_INVALID;
diff --git a/mindspore/lite/src/ops/arithmetic.cc b/mindspore/lite/src/ops/arithmetic.cc
index cdd775dc79..9e34d9d6a5 100644
--- a/mindspore/lite/src/ops/arithmetic.cc
+++ b/mindspore/lite/src/ops/arithmetic.cc
@@ -55,7 +55,7 @@ int Arithmetic::InferShape(std::vector<lite::tensor::Tensor *> inputs_, std::vec
     ndim_ = input_shape1.size();
     auto fill_dim_num = input_shape1.size() - input_shape0.size();
     int j = 0;
-    for (int i = 0; i < input_shape1.size(); i++) {
+    for (size_t i = 0; i < input_shape1.size(); i++) {
       if (i < fill_dim_num) {
         in_shape0_[i] = 1;
       } else {
@@ -68,7 +68,7 @@ int Arithmetic::InferShape(std::vector<lite::tensor::Tensor *> inputs_, std::vec
     ndim_ = input_shape0.size();
     auto fill_dim_num = input_shape0.size() - input_shape1.size();
     int j = 0;
-    for (int i = 0; i < input_shape0.size(); i++) {
+    for (size_t i = 0; i < input_shape0.size(); i++) {
       if (i < fill_dim_num) {
         in_shape1_[i] = 1;
       } else {
@@ -77,14 +77,14 @@ int Arithmetic::InferShape(std::vector<lite::tensor::Tensor *> inputs_, std::vec
       in_shape0_[i] = input_shape0[i];
     }
   } else {
-    for (int i = 0; i < input_shape0.size(); i++) {
+    for (size_t i = 0; i < input_shape0.size(); i++) {
       in_shape1_[i] = input_shape1[i];
       in_shape0_[i] = input_shape0[i];
     }
   }
 
   std::vector<int> output_shape;
-  for (size_t i = 0; i < ndim_; i++) {
+  for (int i = 0; i < ndim_; i++) {
     if (in_shape0_[i] != in_shape1_[i]) {
       if (in_shape0_[i] == 1) {
         out_shape_[i] = in_shape1_[i];
diff --git a/mindspore/lite/src/ops/batch_to_space.cc b/mindspore/lite/src/ops/batch_to_space.cc
index d9f9ebf792..cd1c897b3b 100644
--- a/mindspore/lite/src/ops/batch_to_space.cc
+++ b/mindspore/lite/src/ops/batch_to_space.cc
@@ -85,7 +85,7 @@ int BatchToSpace::InferShape(std::vector<lite::tensor::Tensor *> inputs, std::ve
     MS_LOG(ERROR) << "Crops size should be " << kCropsSize;
     return RET_PARAM_INVALID;
   }
-  size_t mul_block_shape = 1;
+  int mul_block_shape = 1;
 
   for (size_t i = 0; i < kBlockShapeSize; ++i) {
     if (block_shape[i] <= 0) {
diff --git a/mindspore/lite/src/ops/concat.cc b/mindspore/lite/src/ops/concat.cc
index 3e3d7aa2ec..2e724b82d4 100644
--- a/mindspore/lite/src/ops/concat.cc
+++ b/mindspore/lite/src/ops/concat.cc
@@ -58,7 +58,7 @@ int Concat::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor
 
   MS_ASSERT(concat_prim != nullptr);
   auto input0_shape = inputs_.at(0)->shape();
-  int axis = GetAxis() < 0 ? GetAxis() + input0_shape.size() : GetAxis();
+  auto axis = GetAxis() < 0 ? GetAxis() + input0_shape.size() : GetAxis();
   if (axis < 0 || axis >= input0_shape.size()) {
     MS_LOG(ERROR) << "Invalid axis: " << axis;
     return RET_PARAM_INVALID;
diff --git a/mindspore/lite/src/ops/embedding_lookup.cc b/mindspore/lite/src/ops/embedding_lookup.cc
index c1aa76a4bb..fa8e8fa094 100644
--- a/mindspore/lite/src/ops/embedding_lookup.cc
+++ b/mindspore/lite/src/ops/embedding_lookup.cc
@@ -58,7 +58,7 @@ int EmbeddingLookup::InferShape(std::vector<tensor::Tensor *> inputs_, std::vect
   for (size_t i = 0; i < embedding_shape.size(); ++i) {
     output_shape.push_back(embedding_shape.at(i));
   }
-  for (int i = 1; i < inputs_.size() - 1; ++i) {
+  for (size_t i = 1; i < inputs_.size() - 1; ++i) {
     auto embedding_shape_t = inputs_.at(i)->shape();
     embedding_shape_t.erase(embedding_shape_t.begin());
     if (embedding_shape_t != embedding_shape) {
diff --git a/mindspore/lite/src/ops/expand_dims.cc b/mindspore/lite/src/ops/expand_dims.cc
index a05ea72439..36cc4d8064 100644
--- a/mindspore/lite/src/ops/expand_dims.cc
+++ b/mindspore/lite/src/ops/expand_dims.cc
@@ -51,7 +51,7 @@ int ExpandDims::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<te
   if (dim < 0) {
     dim += input->shape().size() + 1;
   }
-  if (dim > input->shape().size()) {
+  if (dim > static_cast<int>(input->shape().size())) {
     MS_LOG(ERROR) << "attribute dim out of range";
     return RET_INPUT_TENSOR_ERROR;
   }
diff --git a/mindspore/lite/src/ops/flatten.cc b/mindspore/lite/src/ops/flatten.cc
index f5a9606838..b9259b8c4f 100644
--- a/mindspore/lite/src/ops/flatten.cc
+++ b/mindspore/lite/src/ops/flatten.cc
@@ -42,7 +42,7 @@ int Flatten::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tenso
   std::vector<int> output_shape(2);
   output_shape[0] = input_shape[0];
   output_shape[1] = 1;
-  for (int i = 1; i < input_shape.size(); i++) {
+  for (size_t i = 1; i < input_shape.size(); i++) {
     output_shape[1] *= input_shape[i];
   }
   output->set_shape(output_shape);
diff --git a/mindspore/lite/src/ops/full_connection.cc b/mindspore/lite/src/ops/full_connection.cc
index 8f7bb73828..985fa76f0c 100644
--- a/mindspore/lite/src/ops/full_connection.cc
+++ b/mindspore/lite/src/ops/full_connection.cc
@@ -60,7 +60,7 @@ int FullConnection::InferShape(std::vector<lite::tensor::Tensor *> inputs_,
     MS_LOG(ERROR) << "Input tensors num error";
     return 1;
   }
-  if (GetAxis() < 1 || GetAxis() > input0->shape().size()) {
+  if (GetAxis() < 1 || GetAxis() > static_cast<int>(input0->shape().size())) {
     MS_LOG(ERROR) << "FullConnection axis invalid";
     return 1;
   }
diff --git a/mindspore/lite/src/ops/gather.cc b/mindspore/lite/src/ops/gather.cc
index 9f7c5ab435..4e8bac1fa8 100644
--- a/mindspore/lite/src/ops/gather.cc
+++ b/mindspore/lite/src/ops/gather.cc
@@ -83,7 +83,7 @@ int Gather::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor
   }
   std::vector<int> out_shape{in_shape};
   out_shape.erase(out_shape.begin() + axis);
-  for (size_t i = 0; i < indices_rank; i++) {
+  for (int i = 0; i < indices_rank; i++) {
     out_shape.insert(out_shape.begin() + axis, indices_shape[i]);
   }
   output->set_shape(out_shape);
diff --git a/mindspore/lite/src/ops/matmul.cc b/mindspore/lite/src/ops/matmul.cc
index 67fc4fee27..51cc51d327 100644
--- a/mindspore/lite/src/ops/matmul.cc
+++ b/mindspore/lite/src/ops/matmul.cc
@@ -56,7 +56,7 @@ int MatMul::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor
     MS_LOG(ERROR) << "inputs shape is invalid";
     return RET_INPUT_TENSOR_ERROR;
   }
-  for (int i = 0; i < a_shape.size() - 2; ++i) {
+  for (size_t i = 0; i < a_shape.size() - 2; ++i) {
     if (a_shape[i] != b_shape[i]) {
       MS_LOG(ERROR) << "Op MatMul's dimensions must be equal";
       return RET_INPUT_TENSOR_ERROR;
diff --git a/mindspore/lite/src/ops/mean.cc b/mindspore/lite/src/ops/mean.cc
index a68fd1f333..e3986fdebb 100644
--- a/mindspore/lite/src/ops/mean.cc
+++ b/mindspore/lite/src/ops/mean.cc
@@ -67,7 +67,7 @@ int Mean::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor::
   // reduce on all axes
   if (num_axes == 0) {
     if (keep_dims) {
-      for (auto i = 0; i < in_shape.size(); i++) {
+      for (size_t i = 0; i < in_shape.size(); i++) {
         out_shape.push_back(1);
       }
     }
@@ -78,7 +78,7 @@ int Mean::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor::
   // reduce on selected axes
   for (size_t i = 0; i < in_shape.size(); i++) {
     bool reduce_axis = false;
-    for (int idx = 0; idx < num_axes; ++idx) {
+    for (size_t idx = 0; idx < num_axes; ++idx) {
       if (static_cast<size_t>(axes[idx]) == i) {
         reduce_axis = true;
         break;
diff --git a/mindspore/lite/src/ops/prior_box.cc b/mindspore/lite/src/ops/prior_box.cc
index 1b972e18c0..ec7cb3d471 100644
--- a/mindspore/lite/src/ops/prior_box.cc
+++ b/mindspore/lite/src/ops/prior_box.cc
@@ -110,7 +110,7 @@ int PriorBox::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tens
   std::vector<float> different_aspect_ratios{1.0f};
   auto aspect_ratios = GetAspectRatios();
   MS_ASSERT(aspect_ratios != nullptr);
-  for (auto i = 0; i < aspect_ratios.size(); i++) {
+  for (size_t i = 0; i < aspect_ratios.size(); i++) {
     float ratio = aspect_ratios[i];
     bool exist = std::any_of(different_aspect_ratios.begin(), different_aspect_ratios.end(),
                              [&](float v) { return abs(ratio - v) < 1e-6; });
diff --git a/mindspore/lite/src/ops/reduce.cc b/mindspore/lite/src/ops/reduce.cc
index 2fa00dd966..9e887c9b6a 100644
--- a/mindspore/lite/src/ops/reduce.cc
+++ b/mindspore/lite/src/ops/reduce.cc
@@ -71,7 +71,7 @@ int Reduce::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor
   // reduce on all axes
   if (num_axes == 0) {
     if (keep_dims) {
-      for (auto i = 0; i < in_shape.size(); i++) {
+      for (size_t i = 0; i < in_shape.size(); i++) {
         out_shape.push_back(1);
       }
     }
@@ -82,7 +82,7 @@ int Reduce::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor
   // reduce on selected axes
   for (size_t i = 0; i < in_shape.size(); i++) {
     bool reduce_axis = false;
-    for (int idx = 0; idx < num_axes; ++idx) {
+    for (size_t idx = 0; idx < num_axes; ++idx) {
       if (static_cast<size_t>(axes[idx]) == i || static_cast<size_t>(axes[idx] + in_shape.size()) == i) {
         reduce_axis = true;
         break;
diff --git a/mindspore/lite/src/ops/reshape.cc b/mindspore/lite/src/ops/reshape.cc
index e9662f22b0..fd136d0bbb 100644
--- a/mindspore/lite/src/ops/reshape.cc
+++ b/mindspore/lite/src/ops/reshape.cc
@@ -80,15 +80,15 @@ void CalShape(const T *data, const std::vector<tensor::Tensor *> &inputs, std::v
   int input_count = inputs[0]->ElementsNum();
   int index = 0;
   int size = 1;
-  for (size_t i = 0; i < shape_size; i++) {
-    if (data[i] == -1) {
+  for (int i = 0; i < shape_size; i++) {
+    if (static_cast<int>(data[i]) == -1) {
       index = i;
     } else {
       size *= data[i];
     }
     out_shape->push_back(data[i]);
   }
-  if (data[index] == -1) {
+  if (static_cast<int>(data[index]) == -1) {
     (*out_shape)[index] = input_count / size;
   }
 }
diff --git a/mindspore/lite/src/ops/slice.cc b/mindspore/lite/src/ops/slice.cc
index 3190bb57dd..a221a11eac 100644
--- a/mindspore/lite/src/ops/slice.cc
+++ b/mindspore/lite/src/ops/slice.cc
@@ -67,7 +67,7 @@ int SliceOp::InferShape(std::vector<lite::tensor::Tensor *> inputs, std::vector<
   std::vector<int32_t> slice_begin(GetBegin().begin(), GetBegin().end());
   std::vector<int32_t> slice_size(GetSize().begin(), GetSize().end());
   std::vector<int32_t> output_shape(input_shape.size());
-  for (int i = 0; i < input_shape.size(); ++i) {
+  for (size_t i = 0; i < input_shape.size(); ++i) {
     if (slice_size[i] < 0 && slice_size[i] != -1) {
       MS_LOG(ERROR) << "Invalid size input!size[" << i << "]=" << slice_size[i];
       return RET_PARAM_INVALID;
diff --git a/mindspore/lite/src/ops/split.cc b/mindspore/lite/src/ops/split.cc
index 4b48debd83..ab17e87b71 100644
--- a/mindspore/lite/src/ops/split.cc
+++ b/mindspore/lite/src/ops/split.cc
@@ -62,7 +62,7 @@ int Split::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor:
     return RET_ERROR;
   }
   int number_split = spilt_prim->numberSplit();
-  if (outputs_.size() != number_split) {
+  if (static_cast<int>(outputs_.size()) != number_split) {
     MS_LOG(ERROR) << "outputs number is not equal to " << number_split;
     return RET_ERROR;
   }
diff --git a/mindspore/lite/src/ops/squeeze.cc b/mindspore/lite/src/ops/squeeze.cc
index 6669429a42..2496c77fd9 100644
--- a/mindspore/lite/src/ops/squeeze.cc
+++ b/mindspore/lite/src/ops/squeeze.cc
@@ -62,15 +62,15 @@ int Squeeze::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tenso
     axes_.push_back(*iter);
   }
   if (axes_.size() == 0) {
-    for (int i = 0; i < in_shape.size(); i++) {
+    for (size_t i = 0; i < in_shape.size(); i++) {
       if (in_shape[i] != 1) {
         out_shape.push_back(in_shape[i]);
       }
     }
   } else {
-    int axisIdx = 0;
-    for (int i = 0; i < in_shape.size(); i++) {
-      if (axisIdx < axes_.size() && axes_[axisIdx] == i) {
+    size_t axisIdx = 0;
+    for (size_t i = 0; i < in_shape.size(); i++) {
+      if (axisIdx < axes_.size() && axes_[axisIdx] == static_cast<int>(i)) {
         MS_ASSERT(in_shape[i] == 1);
         axisIdx++;
         continue;
diff --git a/mindspore/lite/src/ops/stack.cc b/mindspore/lite/src/ops/stack.cc
index 2134ac03ef..c87bd86dc7 100644
--- a/mindspore/lite/src/ops/stack.cc
+++ b/mindspore/lite/src/ops/stack.cc
@@ -64,7 +64,7 @@ int Stack::InferShape(std::vector<tensor::Tensor *> inputs, std::vector<tensor::
   auto input_shape = input->shape();
 
   std::vector<int32_t> output_shape = input_shape;
-  int axis = GetAxis() < 0 ? GetAxis() + input_shape.size() : GetAxis();
+  auto axis = GetAxis() < 0 ? GetAxis() + input_shape.size() : GetAxis();
   if (axis < 0 || axis > input_shape.size()) {
     MS_LOG(ERROR) << "Invalid axis " << GetAxis();
     return RET_PARAM_INVALID;
diff --git a/mindspore/lite/src/ops/strided_slice.cc b/mindspore/lite/src/ops/strided_slice.cc
index dc2dda089c..80714673a4 100644
--- a/mindspore/lite/src/ops/strided_slice.cc
+++ b/mindspore/lite/src/ops/strided_slice.cc
@@ -89,7 +89,7 @@ constexpr int kStridedSliceInputNum = 1;
 }  // namespace
 
 void StridedSlice::ApplyNewAxisMask() {
-  for (int i = 0; i < new_axis_mask_.size(); i++) {
+  for (size_t i = 0; i < new_axis_mask_.size(); i++) {
     if (new_axis_mask_.at(i)) {
       ndim_ += 1;
       in_shape_.insert(in_shape_.begin() + i, 1);
@@ -112,7 +112,7 @@ void StridedSlice::ApplyNewAxisMask() {
 std::vector<int> StridedSlice::ApplyShrinkMask(std::vector<int> out_shape) {
   auto old_out_shape = out_shape;
   out_shape.clear();
-  for (int i = 0; i < shrink_axis_mask_.size(); i++) {
+  for (size_t i = 0; i < shrink_axis_mask_.size(); i++) {
     if (shrink_axis_mask_.at(i)) {
       ends_.at(i) = begins_.at(i) + 1;
       strides_.at(i) = 1;
@@ -120,7 +120,7 @@ std::vector<int> StridedSlice::ApplyShrinkMask(std::vector<int> out_shape) {
       out_shape.emplace_back(old_out_shape.at(i));
     }
   }
-  for (int i = shrink_axis_mask_.size(); i < old_out_shape.size(); i++) {
+  for (size_t i = shrink_axis_mask_.size(); i < old_out_shape.size(); i++) {
     out_shape.emplace_back(old_out_shape.at(i));
   }
   return out_shape;
@@ -128,7 +128,7 @@ std::vector<int> StridedSlice::ApplyShrinkMask(std::vector<int> out_shape) {
 
 /*only one bit will be used if multiple bits are true.*/
 void StridedSlice::ApplyEllipsisMask() {
-  for (int i = 0; i < ellipsis_mask_.size(); i++) {
+  for (size_t i = 0; i < ellipsis_mask_.size(); i++) {
     if (ellipsis_mask_.at(i)) {
       begins_.at(i) = 0;
       ends_.at(i) = in_shape_.at(i);
@@ -204,7 +204,7 @@ int StridedSlice::InferShape(std::vector<lite::tensor::Tensor *> inputs, std::ve
 
   output_shape.clear();
   output_shape.resize(in_shape_.size());
-  for (int i = 0; i < in_shape_.size(); i++) {
+  for (int i = 0; i < static_cast<int>(in_shape_.size()); i++) {
     if (i < ndim_ && new_axis_mask_.at(i)) {
       output_shape.at(i) = 1;
     } else {
diff --git a/mindspore/lite/src/ops/transpose.cc b/mindspore/lite/src/ops/transpose.cc
index f8830d26ca..67a223f4c9 100644
--- a/mindspore/lite/src/ops/transpose.cc
+++ b/mindspore/lite/src/ops/transpose.cc
@@ -63,7 +63,7 @@ int Transpose::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<ten
   std::vector<int> in_shape = input->shape();
   std::vector<int> out_shape;
   out_shape.resize(perm.size());
-  for (int i = 0; i < perm.size(); ++i) {
+  for (size_t i = 0; i < perm.size(); ++i) {
     out_shape[i] = in_shape[perm[i]];
   }
   output->set_shape(out_shape);
diff --git a/mindspore/lite/src/ops/unsqueeze.cc b/mindspore/lite/src/ops/unsqueeze.cc
index ab384aa833..1d7f682f4c 100644
--- a/mindspore/lite/src/ops/unsqueeze.cc
+++ b/mindspore/lite/src/ops/unsqueeze.cc
@@ -67,10 +67,10 @@ int Unsqueeze::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<ten
     }
   } else {
     auto sz = in_rank + dim_rank;
-    int in_itr = 0;
-    int ax_itr = 0;
-    for (int i = 0; i < sz; i++) {
-      if (ax_itr < dim_rank && dims[ax_itr] == i) {
+    size_t in_itr = 0;
+    size_t ax_itr = 0;
+    for (size_t i = 0; i < sz; i++) {
+      if (ax_itr < dim_rank && dims[ax_itr] == static_cast<int>(i)) {
         out_shape.emplace_back(1);
         ax_itr++;
       } else if (ax_itr < dim_rank && dims[ax_itr] + sz == i) {
diff --git a/mindspore/lite/src/ops/unstack.cc b/mindspore/lite/src/ops/unstack.cc
index 0b3f737db2..7119f18019 100644
--- a/mindspore/lite/src/ops/unstack.cc
+++ b/mindspore/lite/src/ops/unstack.cc
@@ -39,7 +39,7 @@ int Unstack::InferShape(std::vector<tensor::Tensor *> inputs, std::vector<tensor
   MS_ASSERT(input != nullptr);
   auto input_shape = input->shape();
 
-  int axis = GetAxis() < 0 ? GetAxis() + input_shape.size() : GetAxis();
+  auto axis = GetAxis() < 0 ? GetAxis() + input_shape.size() : GetAxis();
   if (axis < 0 || axis >= input_shape.size()) {
     MS_LOG(ERROR) << "Invalid axis " << GetAxis();
     return RET_PARAM_INVALID;
diff --git a/mindspore/lite/src/ops/where.cc b/mindspore/lite/src/ops/where.cc
index 03dbf1beb3..35bc3056dd 100644
--- a/mindspore/lite/src/ops/where.cc
+++ b/mindspore/lite/src/ops/where.cc
@@ -66,8 +66,8 @@ int Where::InferShape(std::vector<tensor::Tensor *> inputs_, std::vector<tensor:
   auto shape_tmp1 = inputs_.at(1)->shape();
   auto shape_tmp2 = inputs_.at(2)->shape();
   int axisout = 0;
-  int temp = 0;
-  for (int j = 0; j < shape_tmp.size(); j++) {
+  size_t temp = 0;
+  for (size_t j = 0; j < shape_tmp.size(); j++) {
     if (shape_tmp[j] == shape_tmp1[j] && shape_tmp[j] != shape_tmp2[j]) {
       axisout = j;
       break;
diff --git a/mindspore/lite/tools/anf_exporter/anf_exporter.cc b/mindspore/lite/tools/anf_exporter/anf_exporter.cc
index b4541097ff..faf717b7ef 100644
--- a/mindspore/lite/tools/anf_exporter/anf_exporter.cc
+++ b/mindspore/lite/tools/anf_exporter/anf_exporter.cc
@@ -118,7 +118,7 @@ int AnfExporter::ConvertQuantParam(const std::unique_ptr<schema::MetaGraphT> &me
     // activation
     auto input_quant_params = primitive->GetInputQuantParams();
     auto node_type = primitive->GetPrimitiveT()->value.type;
-    for (int i = 0; i < input_quant_params.size(); i++) {
+    for (size_t i = 0; i < input_quant_params.size(); i++) {
       if (i >= dst_node->inputIndex.size()) {
         MS_LOG(ERROR) << "node: " << dst_node->name << " input has " << input_quant_params.size()
                       << " quant_params; but only " << dst_node->inputIndex.size() << " input";
@@ -375,7 +375,7 @@ void AnfExporter::SetOpOutputNode(const CNodePtr &cnode, const std::unique_ptr<s
 
   if (utils::isa<abstract::AbstractTuple>(cnode->abstract())) {
     auto tuple = std::reinterpret_pointer_cast<abstract::AbstractTuple>(cnode->abstract());
-    for (int i = 0; i < tuple->size(); i++) {
+    for (size_t i = 0; i < tuple->size(); i++) {
       auto msTensor = new schema::TensorT();
       msTensor->nodeType = schema::NodeType_Parameter;
       fb_node->outputIndex.emplace_back(meta_graphT->allTensors.size());
diff --git a/mindspore/lite/tools/converter/legacy_optimizer/graph/eltwise_format_trans_pass.cc b/mindspore/lite/tools/converter/legacy_optimizer/graph/eltwise_format_trans_pass.cc
index 30fcea3566..66b8481ea9 100644
--- a/mindspore/lite/tools/converter/legacy_optimizer/graph/eltwise_format_trans_pass.cc
+++ b/mindspore/lite/tools/converter/legacy_optimizer/graph/eltwise_format_trans_pass.cc
@@ -136,7 +136,7 @@ STATUS EltwiseFormatTransPass::Run(schema::MetaGraphT *graph) {
 
     STATUS status = RET_OK;
     auto input_tensor_size = (*iter)->inputIndex.size();
-    for (auto i = 0; i < input_tensor_size; i++) {
+    for (size_t i = 0; i < input_tensor_size; i++) {
       iter = InsertFormatTransNode(graph, iter, kBefore, i, pre_insert_trans_type_, &status);
       if (status != RET_OK) {
         MS_LOG(ERROR) << "Insert" << pre_insert_trans_type_ << "before " << (*iter)->name << " failed";
@@ -144,7 +144,7 @@ STATUS EltwiseFormatTransPass::Run(schema::MetaGraphT *graph) {
       }
     }
     auto output_tensor_size = (*iter)->outputIndex.size();
-    for (auto i = 0; i < output_tensor_size; i++) {
+    for (size_t i = 0; i < output_tensor_size; i++) {
       iter = InsertFormatTransNode(graph, iter, kAfter, i, post_insert_trans_type_, &status);
       if (status != RET_OK) {
         MS_LOG(ERROR) << "Insert" << post_insert_trans_type_ << "Node before " << (*iter)->name << " failed";
diff --git a/mindspore/lite/tools/converter/parser/caffe/caffe_batchnorm_parser.cc b/mindspore/lite/tools/converter/parser/caffe/caffe_batchnorm_parser.cc
index 7b22fd2d95..b126089ac7 100644
--- a/mindspore/lite/tools/converter/parser/caffe/caffe_batchnorm_parser.cc
+++ b/mindspore/lite/tools/converter/parser/caffe/caffe_batchnorm_parser.cc
@@ -37,16 +37,15 @@ STATUS CaffeBatchNormParser::Parse(const caffe::LayerParameter &proto, const caf
 
   // check bottom size
   if (proto.bottom_size() != CAFFE_BATCHNORMAL_BOTTOM_SIZE) {
-    // MS_LOGE("Layer %s bottom numbers is error, it must be %d, but is %d", proto.name().c_str(),
-    // CAFFE_BATCHNORMAL_BOTTOM_SIZE, proto.bottom_size());
+    MS_LOG(ERROR) << "Layer " << proto.name().c_str() << "bottom numbers is error, it must be " \
+                  << CAFFE_BATCHNORMAL_BOTTOM_SIZE << "but is " << proto.bottom_size();
     return RET_ERROR;
   }
 
   // check top size
   if (proto.top_size() != CAFFE_BATCHNORMAL_TOP_SIZE) {
-    // MS_LOGE("Layer %s top numbers is error, it must be %d, but is %d", \
-               proto.name().c_str(), CAFFE_BATCHNORMAL_TOP_SIZE,
-    // proto.top_size());
+    MS_LOG(ERROR) << "Layer " << proto.name().c_str() << "top numbers is error, it must be " \
+                  << CAFFE_BATCHNORMAL_TOP_SIZE << "but is " << proto.top_size();
     return RET_ERROR;
   }
 
diff --git a/mindspore/lite/tools/converter/parser/caffe/caffe_inspector.cc b/mindspore/lite/tools/converter/parser/caffe/caffe_inspector.cc
index 18c4337b8f..6c5428fc9b 100644
--- a/mindspore/lite/tools/converter/parser/caffe/caffe_inspector.cc
+++ b/mindspore/lite/tools/converter/parser/caffe/caffe_inspector.cc
@@ -23,7 +23,7 @@ STATUS CaffeInspector::InspectModel(const caffe::NetParameter &proto) {
   net = proto;
 
   if (proto.layer_size() == 0) {
-    // MS_LOGE("net layer num is zero, prototxt file may be invalid.");
+    MS_LOG(ERROR) << "net layer num is zero, prototxt file may be invalid.";
     return RET_ERROR;
   }
 
@@ -32,12 +32,13 @@ STATUS CaffeInspector::InspectModel(const caffe::NetParameter &proto) {
   SetTopsAndBottoms();
 
   FindInputAndOutput();
+  return RET_OK;
 }
 
 STATUS CaffeInspector::ParseInput() {
   if (net.input_size() > 0) {
-    // MS_LOGI("This net exist input.");
-    for (int i = 0; i < net.input_size(); i++) {
+    MS_LOG(INFO) << "This net exist input.";
+    for (size_t i = 0; i < net.input_size(); i++) {
       graphInput.insert(net.input(i));
     }
   }
@@ -55,6 +56,7 @@ STATUS CaffeInspector::FindInputAndOutput() {
       graphOutput.insert(iter);
     }
   }
+  return RET_OK;
 }
 
 STATUS CaffeInspector::SetTopsAndBottoms() {
@@ -73,6 +75,7 @@ STATUS CaffeInspector::SetTopsAndBottoms() {
       layerBottoms.insert(layer.bottom(j));
     }
   }
+  return RET_OK;
 }
 }  // namespace lite
 }  // namespace mindspore
diff --git a/mindspore/lite/tools/converter/parser/caffe/caffe_node_parser.cc b/mindspore/lite/tools/converter/parser/caffe/caffe_node_parser.cc
index fbee603b14..b82d55446e 100644
--- a/mindspore/lite/tools/converter/parser/caffe/caffe_node_parser.cc
+++ b/mindspore/lite/tools/converter/parser/caffe/caffe_node_parser.cc
@@ -95,6 +95,7 @@ STATUS ConvertShape(const caffe::BlobProto &proto, std::vector<int32_t> *shape)
       shape->push_back(proto.shape().dim(i));
     }
   }
+  return RET_OK;
 }
 }  // namespace lite
 }  // namespace mindspore
diff --git a/mindspore/lite/tools/converter/parser/tflite/tflite_addn_parser.cc b/mindspore/lite/tools/converter/parser/tflite/tflite_addn_parser.cc
index b88666fca9..8c563d3bd9 100644
--- a/mindspore/lite/tools/converter/parser/tflite/tflite_addn_parser.cc
+++ b/mindspore/lite/tools/converter/parser/tflite/tflite_addn_parser.cc
@@ -49,7 +49,7 @@ STATUS TfliteAddNParser::Parse(const std::unique_ptr<tflite::OperatorT> &tflite_
   op->primitive->value.value = attr.release();
 
   // set input
-  for (int i = 0; i < tflite_op->inputs.size(); i++) {
+  for (size_t i = 0; i < tflite_op->inputs.size(); i++) {
     AddOpInput(op, tensors_id, tensors_format, tensors_id_map,
                tflite_op->inputs[i], tensors_id->size(), tflite_tensors.size(), schema::Format_NHWC);
   }
diff --git a/mindspore/lite/tools/converter/quantizer/general_bitpacking.cc b/mindspore/lite/tools/converter/quantizer/general_bitpacking.cc
index 6e1e59cab2..4e8897c659 100644
--- a/mindspore/lite/tools/converter/quantizer/general_bitpacking.cc
+++ b/mindspore/lite/tools/converter/quantizer/general_bitpacking.cc
@@ -74,7 +74,7 @@ void BitPack::BitPacking(const std::vector<uint8_t>& originDataVec, std::vector<
 
     size_t remainBitData = bitDataVec.size();
     if (8 > remainBitData && remainBitData > 0) {
-        for (int i = 0; i < 8 - remainBitData; i++) {
+        for (size_t i = 0; i < 8 - remainBitData; i++) {
             bitDataVec.push(0);
         }
         PackFromOriginToUint8(bitDataVec, packedDataVec);