diff --git a/schema/class_request.py b/schema/class_request.py
new file mode 100644
index 0000000..748388e
--- /dev/null
+++ b/schema/class_request.py
@@ -0,0 +1,22 @@
+from pydantic import BaseModel,Field,ConfigDict
+from datetime import datetime
+class ClassRequest(BaseModel): #定义更新班级信息的请求体
+    class_id: str = Field(...,)
+    class_name: str = Field(...,)
+    ht_id: int = Field(...)
+    t_id: int = Field(...)
+    start_time: datetime = Field(...)
+    model_config = ConfigDict(from_attributes=True)
+class ClassCreate(ClassRequest):
+    pass
+class ClassUpdate(ClassRequest):
+    pass
+class ClassResponse(BaseModel): #定义响应体
+    code:int = 200
+    detail:str ='OK'
+    totals:int = 0
+    data:ClassRequest | None = None #原来的写法str | dict | list | tuple 这几种类型里，
+                                    #一个都匹配不上路由里传的ORM对象result（Class类的实例），所以报错500
+
+
+