diff --git a/mindspore/ccsrc/kernel/tbe/tbe_convert_utils.cc b/mindspore/ccsrc/kernel/tbe/tbe_convert_utils.cc
index 3278021009..5212dc9641 100644
--- a/mindspore/ccsrc/kernel/tbe/tbe_convert_utils.cc
+++ b/mindspore/ccsrc/kernel/tbe/tbe_convert_utils.cc
@@ -74,14 +74,6 @@ TypeId DtypeToTypeId(const std::string &dtypes) {
   return iter->second;
 }
 
-std::string DtypeToString(const std::string &dtypes) {
-  auto iter = type_str_maps.find(dtypes);
-  if (iter == type_str_maps.end()) {
-    MS_LOG(EXCEPTION) << "Illegal input dtype: " << dtypes;
-  }
-  return iter->second;
-}
-
 std::string TypeIdToString(TypeId type_id) {
   auto iter = type_id_str_maps.find(type_id);
   if (iter == type_id_str_maps.end()) {
diff --git a/mindspore/ccsrc/kernel/tbe/tbe_convert_utils.h b/mindspore/ccsrc/kernel/tbe/tbe_convert_utils.h
index 9b9b3770df..2c8d3008b9 100644
--- a/mindspore/ccsrc/kernel/tbe/tbe_convert_utils.h
+++ b/mindspore/ccsrc/kernel/tbe/tbe_convert_utils.h
@@ -28,8 +28,6 @@ namespace tbe {
 constexpr auto kProcessorAiCore = "aicore";
 TypeId DtypeToTypeId(const std::string &dtypes);
 
-std::string DtypeToString(const std::string &dtypes);
-
 std::string TypeIdToString(TypeId type_id);
 
 size_t GetDtypeNbyte(const std::string &dtypes);
diff --git a/mindspore/ccsrc/kernel/tbe/tbe_kernel_build.cc b/mindspore/ccsrc/kernel/tbe/tbe_kernel_build.cc
index 86d6801a60..8a26de3400 100644
--- a/mindspore/ccsrc/kernel/tbe/tbe_kernel_build.cc
+++ b/mindspore/ccsrc/kernel/tbe/tbe_kernel_build.cc
@@ -615,7 +615,7 @@ void TbeKernelBuild::GenDescJson(const std::shared_ptr<mindspore::AnfNode> &anf_
     spec_shape.emplace_back(shape[2] * shape[3]);
     spec_shape.emplace_back(shape[4]);
     (*output_desc)["shape"] = spec_shape;
-  } else if (fusion_data_type == kFusionReLUGradV2 && (*output_desc)["data_type"] == "uint8") {
+  } else if (fusion_data_type == kFusionReLUGradV2) {
     std::vector<size_t> spec_shape = {};
     spec_shape.emplace_back(shape[0]);
     spec_shape.emplace_back(shape[1]);
diff --git a/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_broadcast_selecter.h b/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_broadcast_selecter.h
index 2beb81927f..af711ddf29 100644
--- a/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_broadcast_selecter.h
+++ b/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_broadcast_selecter.h
@@ -51,7 +51,6 @@ class TbeKernelBroadCastSelecter {
   std::vector<std::vector<size_t>> input_shapes_;
   std::vector<std::vector<size_t>> output_shapes_;
 };
-
 }  // namespace kernel
 }  // namespace mindspore
 #endif  // MINDSPORE_TBE_KERNEL_BROADCAST_SELECTER_HELPER_H
diff --git a/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_reduce_selecter.cc b/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_reduce_selecter.cc
index d62f3cea2f..da0466feaa 100644
--- a/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_reduce_selecter.cc
+++ b/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_reduce_selecter.cc
@@ -175,6 +175,5 @@ void TbeKernelReduceSelecter::PadScalarShape(std::vector<size_t> *shape) const {
     shape->emplace_back(1);
   }
 }
-
 }  // namespace kernel
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_select.cc b/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_select.cc
index e9ad128335..1b7ef2d72a 100644
--- a/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_select.cc
+++ b/mindspore/ccsrc/kernel/tbe/tbe_kernel_select/tbe_kernel_select.cc
@@ -462,6 +462,9 @@ std::vector<std::string> TbeKernelSelect::SplitStrToVec(const std::string &op_se
   std::vector<std::string> ret;
   auto begin = op_select_tmp.find_first_not_of(space, 0);
   auto sep_pos = op_select_tmp.find(sep);
+  if (begin >= sep_pos) {
+    MS_LOG(EXCEPTION) << "Select ret json is error.";
+  }
   while (sep_pos != std::string::npos) {
     auto obj = op_select_tmp.substr(begin, sep_pos - begin);
     if (kDynamicFormatMap.find(obj) != kDynamicFormatMap.end()) {
@@ -628,6 +631,5 @@ void TbeKernelSelect::PrintSupportedFormat(const SupportFormat &support_format)
     MS_LOG(INFO) << "Support format: " << print_str;
   }
 }
-
 }  // namespace kernel
 }  // namespace mindspore