diff --git a/include/c_api/status_c.h b/include/c_api/status_c.h
index 62b19b99460..cbb94085d10 100644
--- a/include/c_api/status_c.h
+++ b/include/c_api/status_c.h
@@ -35,7 +35,7 @@ typedef enum MSStatus {
   // Core
   kMSStatusCoreFailed = kMSCompCodeCore | 0x1,
 
-  // Lite  // Common error code, range: [-1, -100）
+  // Lite  // Common error code, range: [-1, -100)
   kMSStatusLiteError = kMSCompCodeLite | (0x0FFFFFFF & -1),            /**< Common error code. */
   kMSStatusLiteNullptr = kMSCompCodeLite | (0x0FFFFFFF & -2),          /**< NULL pointer returned.*/
   kMSStatusLiteParamInvalid = kMSCompCodeLite | (0x0FFFFFFF & -3),     /**< Invalid parameter.*/
diff --git a/mindspore/ccsrc/frontend/optimizer/irpass/less_batch_normalization.cc b/mindspore/ccsrc/frontend/optimizer/irpass/less_batch_normalization.cc
index 1fdeb8fd1e8..256db81e33b 100644
--- a/mindspore/ccsrc/frontend/optimizer/irpass/less_batch_normalization.cc
+++ b/mindspore/ccsrc/frontend/optimizer/irpass/less_batch_normalization.cc
@@ -29,7 +29,7 @@ constexpr auto kValidResidualStructureIndex = 1;
 constexpr auto kBNParametersStartIndex = 2;
 // Pattern 1
 // Add -> BatchNorm -> Conv2D -> Relu ... -> End
-//     ↘  BatchNorm -> Conv2D -> -> -> -> ↗
+//     BatchNorm -> Conv2D -> -> -> ->
 constexpr auto kFirstBranchPattern1 = 12;
 constexpr auto kSecondBranchPattern1 = 3;
 constexpr auto kFirstBranchStartIndexPattern1 = 4;
@@ -45,7 +45,7 @@ const std::vector<kStructureTuple> ResidualStructureBasePattern{
    {kSecondBranchStartIndexPattern1, kSecondBranchEndIndexPattern1}}};
 // Pattern 2
 // Add -> BatchNorm -> Conv2D -> Relu ... -> End
-//     ↘  -> ->     ...   ... ...    -> -> ↗
+//       -> ->     ...   ... ...    -> ->
 constexpr auto kFirstBranchPattern2 = 12;
 constexpr auto kSecondBranchPattern2 = 1;
 constexpr auto kFirstBranchStartIndexPattern2 = 4;
@@ -59,7 +59,7 @@ const std::vector<kStructureTuple> ResidualStructureShortCutPattern{
   {kSecondBranchPattern2, {prim::kPrimRelu}, {kSecondBranchStartIndexPattern2, kSecondBranchEndIndexPattern2}}};
 // Pattern 3
 // Add -> BatchNorm -> Conv2D -> Relu ... BatchNorm -> Conv2D -> End
-//     ↘  BatchNorm -> Conv2D -> ->   ...   ...   ...   -> -> ↗
+//       BatchNorm -> Conv2D -> ->   ...   ...   ...   -> ->
 constexpr auto kFirstBranchPattern3 = 11;
 constexpr auto kSecondBranchPattern3 = 3;
 constexpr auto kFirstBranchStartIndexPattern3 = 4;
diff --git a/mindspore/ccsrc/transform/express_ir/onnx_exporter.cc b/mindspore/ccsrc/transform/express_ir/onnx_exporter.cc
index 6839374e569..b7f5e19b171 100644
--- a/mindspore/ccsrc/transform/express_ir/onnx_exporter.cc
+++ b/mindspore/ccsrc/transform/express_ir/onnx_exporter.cc
@@ -547,9 +547,9 @@ void ClipPointsComponent(const std::string &points, const std::string &clipped,
 
 namespace while_loop_export {
 namespace {
-const char CONTROL_PATTERN[] = "\u21B5";     // ↵
-const char LOOP_BODY_PATTERN[] = "\u21BB";   // ↻
-const char AFTER_LOOP_PATTERN[] = "\u2193";  // ↓
+const char CONTROL_PATTERN[] = "\u21B5";
+const char LOOP_BODY_PATTERN[] = "\u21BB";
+const char AFTER_LOOP_PATTERN[] = "\u2193";
 
 const size_t LOOP_BODY_INPUT = 2;
 const size_t AFTER_LOOP_INPUT = 3;