diff --git a/consultingapis/dingtalk/v1/dingtalk.pb.go b/consultingapis/dingtalk/v1/dingtalk.pb.go
index c9a11e9..bd6e605 100644
--- a/consultingapis/dingtalk/v1/dingtalk.pb.go
+++ b/consultingapis/dingtalk/v1/dingtalk.pb.go
@@ -425,9 +425,8 @@ type CreateGradeChatGroupRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	UnitId string                            `protobuf:"bytes,1,opt,name=unitId,proto3" json:"unitId,omitempty"` // 学院ID
-	Grade  string                            `protobuf:"bytes,2,opt,name=grade,proto3" json:"grade,omitempty"`   // 年级
-	Body   *CreateGradeChatGroupRequest_Body `protobuf:"bytes,3,opt,name=body,proto3" json:"body,omitempty"`
+	UnitId string `protobuf:"bytes,1,opt,name=unitId,proto3" json:"unitId,omitempty"` // 学院ID
+	Grade  string `protobuf:"bytes,2,opt,name=grade,proto3" json:"grade,omitempty"`   // 年级
 }
 
 func (x *CreateGradeChatGroupRequest) Reset() {
@@ -476,13 +475,6 @@ func (x *CreateGradeChatGroupRequest) GetGrade() string {
 	return ""
 }
 
-func (x *CreateGradeChatGroupRequest) GetBody() *CreateGradeChatGroupRequest_Body {
-	if x != nil {
-		return x.Body
-	}
-	return nil
-}
-
 type CreateGradeChatGroupResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -868,53 +860,6 @@ func (x *GetClassChatGroupResponse_Chat) GetCreatedAt() int64 {
 	return 0
 }
 
-type CreateGradeChatGroupRequest_Body struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
-}
-
-func (x *CreateGradeChatGroupRequest_Body) Reset() {
-	*x = CreateGradeChatGroupRequest_Body{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes[16]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *CreateGradeChatGroupRequest_Body) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*CreateGradeChatGroupRequest_Body) ProtoMessage() {}
-
-func (x *CreateGradeChatGroupRequest_Body) ProtoReflect() protoreflect.Message {
-	mi := &file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes[16]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use CreateGradeChatGroupRequest_Body.ProtoReflect.Descriptor instead.
-func (*CreateGradeChatGroupRequest_Body) Descriptor() ([]byte, []int) {
-	return file_consultingapis_dingtalk_v1_dingtalk_proto_rawDescGZIP(), []int{8, 0}
-}
-
-func (x *CreateGradeChatGroupRequest_Body) GetName() string {
-	if x != nil {
-		return x.Name
-	}
-	return ""
-}
-
 type GetGradeChatGroupResponse_Chat struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -929,7 +874,7 @@ type GetGradeChatGroupResponse_Chat struct {
 func (x *GetGradeChatGroupResponse_Chat) Reset() {
 	*x = GetGradeChatGroupResponse_Chat{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes[17]
+		mi := &file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes[16]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -942,7 +887,7 @@ func (x *GetGradeChatGroupResponse_Chat) String() string {
 func (*GetGradeChatGroupResponse_Chat) ProtoMessage() {}
 
 func (x *GetGradeChatGroupResponse_Chat) ProtoReflect() protoreflect.Message {
-	mi := &file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes[17]
+	mi := &file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes[16]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1049,149 +994,142 @@ var file_consultingapis_dingtalk_v1_dingtalk_proto_rawDesc = []byte{
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+	0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1206,7 +1144,7 @@ func file_consultingapis_dingtalk_v1_dingtalk_proto_rawDescGZIP() []byte {
 	return file_consultingapis_dingtalk_v1_dingtalk_proto_rawDescData
 }
 
-var file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes = make([]protoimpl.MessageInfo, 18)
+var file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes = make([]protoimpl.MessageInfo, 17)
 var file_consultingapis_dingtalk_v1_dingtalk_proto_goTypes = []interface{}{
 	(*CreateClassChatGroupRequest)(nil),      // 0: consultingapis.dingtalk.v1.CreateClassChatGroupRequest
 	(*CreateClassChatGroupResponse)(nil),     // 1: consultingapis.dingtalk.v1.CreateClassChatGroupResponse
@@ -1224,33 +1162,31 @@ var file_consultingapis_dingtalk_v1_dingtalk_proto_goTypes = []interface{}{
 	(*SyncGradeChatGroupResponse)(nil),       // 13: consultingapis.dingtalk.v1.SyncGradeChatGroupResponse
 	(*CreateClassChatGroupRequest_Body)(nil), // 14: consultingapis.dingtalk.v1.CreateClassChatGroupRequest.Body
 	(*GetClassChatGroupResponse_Chat)(nil),   // 15: consultingapis.dingtalk.v1.GetClassChatGroupResponse.Chat
-	(*CreateGradeChatGroupRequest_Body)(nil), // 16: consultingapis.dingtalk.v1.CreateGradeChatGroupRequest.Body
-	(*GetGradeChatGroupResponse_Chat)(nil),   // 17: consultingapis.dingtalk.v1.GetGradeChatGroupResponse.Chat
+	(*GetGradeChatGroupResponse_Chat)(nil),   // 16: consultingapis.dingtalk.v1.GetGradeChatGroupResponse.Chat
 }
 var file_consultingapis_dingtalk_v1_dingtalk_proto_depIdxs = []int32{
 	14, // 0: consultingapis.dingtalk.v1.CreateClassChatGroupRequest.body:type_name -> consultingapis.dingtalk.v1.CreateClassChatGroupRequest.Body
 	15, // 1: consultingapis.dingtalk.v1.GetClassChatGroupResponse.chats:type_name -> consultingapis.dingtalk.v1.GetClassChatGroupResponse.Chat
-	16, // 2: consultingapis.dingtalk.v1.CreateGradeChatGroupRequest.body:type_name -> consultingapis.dingtalk.v1.CreateGradeChatGroupRequest.Body
-	17, // 3: consultingapis.dingtalk.v1.GetGradeChatGroupResponse.chats:type_name -> consultingapis.dingtalk.v1.GetGradeChatGroupResponse.Chat
-	0,  // 4: consultingapis.dingtalk.v1.DingTalkService.CreateClassChatGroup:input_type -> consultingapis.dingtalk.v1.CreateClassChatGroupRequest
-	4,  // 5: consultingapis.dingtalk.v1.DingTalkService.GetClassChatGroup:input_type -> consultingapis.dingtalk.v1.GetClassChatGroupRequest
-	2,  // 6: consultingapis.dingtalk.v1.DingTalkService.MergeClassChatGroup:input_type -> consultingapis.dingtalk.v1.MergeClassChatGroupRequest
-	6,  // 7: consultingapis.dingtalk.v1.DingTalkService.SyncClassChatGroup:input_type -> consultingapis.dingtalk.v1.SyncClassChatGroupRequest
-	8,  // 8: consultingapis.dingtalk.v1.DingTalkService.CreateGradeChatGroup:input_type -> consultingapis.dingtalk.v1.CreateGradeChatGroupRequest
-	10, // 9: consultingapis.dingtalk.v1.DingTalkService.GetGradeChatGroup:input_type -> consultingapis.dingtalk.v1.GetGradeChatGroupRequest
-	12, // 10: consultingapis.dingtalk.v1.DingTalkService.SyncGradeChatGroup:input_type -> consultingapis.dingtalk.v1.SyncGradeChatGroupRequest
-	1,  // 11: consultingapis.dingtalk.v1.DingTalkService.CreateClassChatGroup:output_type -> consultingapis.dingtalk.v1.CreateClassChatGroupResponse
-	5,  // 12: consultingapis.dingtalk.v1.DingTalkService.GetClassChatGroup:output_type -> consultingapis.dingtalk.v1.GetClassChatGroupResponse
-	3,  // 13: consultingapis.dingtalk.v1.DingTalkService.MergeClassChatGroup:output_type -> consultingapis.dingtalk.v1.MergeClassChatGroupResponse
-	7,  // 14: consultingapis.dingtalk.v1.DingTalkService.SyncClassChatGroup:output_type -> consultingapis.dingtalk.v1.SyncClassChatGroupResponse
-	9,  // 15: consultingapis.dingtalk.v1.DingTalkService.CreateGradeChatGroup:output_type -> consultingapis.dingtalk.v1.CreateGradeChatGroupResponse
-	11, // 16: consultingapis.dingtalk.v1.DingTalkService.GetGradeChatGroup:output_type -> consultingapis.dingtalk.v1.GetGradeChatGroupResponse
-	13, // 17: consultingapis.dingtalk.v1.DingTalkService.SyncGradeChatGroup:output_type -> consultingapis.dingtalk.v1.SyncGradeChatGroupResponse
-	11, // [11:18] is the sub-list for method output_type
-	4,  // [4:11] is the sub-list for method input_type
-	4,  // [4:4] is the sub-list for extension type_name
-	4,  // [4:4] is the sub-list for extension extendee
-	0,  // [0:4] is the sub-list for field type_name
+	16, // 2: consultingapis.dingtalk.v1.GetGradeChatGroupResponse.chats:type_name -> consultingapis.dingtalk.v1.GetGradeChatGroupResponse.Chat
+	0,  // 3: consultingapis.dingtalk.v1.DingTalkService.CreateClassChatGroup:input_type -> consultingapis.dingtalk.v1.CreateClassChatGroupRequest
+	4,  // 4: consultingapis.dingtalk.v1.DingTalkService.GetClassChatGroup:input_type -> consultingapis.dingtalk.v1.GetClassChatGroupRequest
+	2,  // 5: consultingapis.dingtalk.v1.DingTalkService.MergeClassChatGroup:input_type -> consultingapis.dingtalk.v1.MergeClassChatGroupRequest
+	6,  // 6: consultingapis.dingtalk.v1.DingTalkService.SyncClassChatGroup:input_type -> consultingapis.dingtalk.v1.SyncClassChatGroupRequest
+	8,  // 7: consultingapis.dingtalk.v1.DingTalkService.CreateGradeChatGroup:input_type -> consultingapis.dingtalk.v1.CreateGradeChatGroupRequest
+	10, // 8: consultingapis.dingtalk.v1.DingTalkService.GetGradeChatGroup:input_type -> consultingapis.dingtalk.v1.GetGradeChatGroupRequest
+	12, // 9: consultingapis.dingtalk.v1.DingTalkService.SyncGradeChatGroup:input_type -> consultingapis.dingtalk.v1.SyncGradeChatGroupRequest
+	1,  // 10: consultingapis.dingtalk.v1.DingTalkService.CreateClassChatGroup:output_type -> consultingapis.dingtalk.v1.CreateClassChatGroupResponse
+	5,  // 11: consultingapis.dingtalk.v1.DingTalkService.GetClassChatGroup:output_type -> consultingapis.dingtalk.v1.GetClassChatGroupResponse
+	3,  // 12: consultingapis.dingtalk.v1.DingTalkService.MergeClassChatGroup:output_type -> consultingapis.dingtalk.v1.MergeClassChatGroupResponse
+	7,  // 13: consultingapis.dingtalk.v1.DingTalkService.SyncClassChatGroup:output_type -> consultingapis.dingtalk.v1.SyncClassChatGroupResponse
+	9,  // 14: consultingapis.dingtalk.v1.DingTalkService.CreateGradeChatGroup:output_type -> consultingapis.dingtalk.v1.CreateGradeChatGroupResponse
+	11, // 15: consultingapis.dingtalk.v1.DingTalkService.GetGradeChatGroup:output_type -> consultingapis.dingtalk.v1.GetGradeChatGroupResponse
+	13, // 16: consultingapis.dingtalk.v1.DingTalkService.SyncGradeChatGroup:output_type -> consultingapis.dingtalk.v1.SyncGradeChatGroupResponse
+	10, // [10:17] is the sub-list for method output_type
+	3,  // [3:10] is the sub-list for method input_type
+	3,  // [3:3] is the sub-list for extension type_name
+	3,  // [3:3] is the sub-list for extension extendee
+	0,  // [0:3] is the sub-list for field type_name
 }
 
 func init() { file_consultingapis_dingtalk_v1_dingtalk_proto_init() }
@@ -1452,18 +1388,6 @@ func file_consultingapis_dingtalk_v1_dingtalk_proto_init() {
 			}
 		}
 		file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateGradeChatGroupRequest_Body); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_consultingapis_dingtalk_v1_dingtalk_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetGradeChatGroupResponse_Chat); i {
 			case 0:
 				return &v.state
@@ -1482,7 +1406,7 @@ func file_consultingapis_dingtalk_v1_dingtalk_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_consultingapis_dingtalk_v1_dingtalk_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   18,
+			NumMessages:   17,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/consultingapis/dingtalk/v1/dingtalk.pb.gw.go b/consultingapis/dingtalk/v1/dingtalk.pb.gw.go
index e76307d..20f6947 100644
--- a/consultingapis/dingtalk/v1/dingtalk.pb.gw.go
+++ b/consultingapis/dingtalk/v1/dingtalk.pb.gw.go
@@ -192,21 +192,13 @@ func local_request_DingTalkService_SyncClassChatGroup_0(ctx context.Context, mar
 }
 
 var (
-	filter_DingTalkService_CreateGradeChatGroup_0 = &utilities.DoubleArray{Encoding: map[string]int{"body": 0}, Base: []int{1, 2, 0, 0}, Check: []int{0, 1, 2, 2}}
+	filter_DingTalkService_CreateGradeChatGroup_0 = &utilities.DoubleArray{Encoding: map[string]int{}, Base: []int(nil), Check: []int(nil)}
 )
 
 func request_DingTalkService_CreateGradeChatGroup_0(ctx context.Context, marshaler runtime.Marshaler, client DingTalkServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq CreateGradeChatGroupRequest
 	var metadata runtime.ServerMetadata
 
-	newReader, berr := utilities.IOReaderFactory(req.Body)
-	if berr != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
-	}
-	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq.Body); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
 	if err := req.ParseForm(); err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
 	}
@@ -223,14 +215,6 @@ func local_request_DingTalkService_CreateGradeChatGroup_0(ctx context.Context, m
 	var protoReq CreateGradeChatGroupRequest
 	var metadata runtime.ServerMetadata
 
-	newReader, berr := utilities.IOReaderFactory(req.Body)
-	if berr != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
-	}
-	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq.Body); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
 	if err := req.ParseForm(); err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
 	}
diff --git a/docs/swagger/consultingapis/dingtalk/v1/dingtalk.swagger.json b/docs/swagger/consultingapis/dingtalk/v1/dingtalk.swagger.json
index 9e1bc17..43cc31e 100644
--- a/docs/swagger/consultingapis/dingtalk/v1/dingtalk.swagger.json
+++ b/docs/swagger/consultingapis/dingtalk/v1/dingtalk.swagger.json
@@ -39,7 +39,7 @@
             "in": "body",
             "required": true,
             "schema": {
-              "$ref": "#/definitions/v1CreateClassChatGroupRequestBody"
+              "$ref": "#/definitions/CreateClassChatGroupRequestBody"
             }
           },
           {
@@ -168,14 +168,6 @@
           }
         },
         "parameters": [
-          {
-            "name": "body",
-            "in": "body",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/v1CreateGradeChatGroupRequestBody"
-            }
-          },
           {
             "name": "unitId",
             "description": "学院ID",
@@ -270,6 +262,14 @@
     }
   },
   "definitions": {
+    "CreateClassChatGroupRequestBody": {
+      "type": "object",
+      "properties": {
+        "name": {
+          "type": "string"
+        }
+      }
+    },
     "protobufAny": {
       "type": "object",
       "properties": {
@@ -298,14 +298,6 @@
         }
       }
     },
-    "v1CreateClassChatGroupRequestBody": {
-      "type": "object",
-      "properties": {
-        "name": {
-          "type": "string"
-        }
-      }
-    },
     "v1CreateClassChatGroupResponse": {
       "type": "object",
       "properties": {
@@ -320,14 +312,6 @@
         }
       }
     },
-    "v1CreateGradeChatGroupRequestBody": {
-      "type": "object",
-      "properties": {
-        "name": {
-          "type": "string"
-        }
-      }
-    },
     "v1CreateGradeChatGroupResponse": {
       "type": "object",
       "properties": {