diff --git a/models/class_model.py b/models/class_model.py
index efd97c7..fbaeb63 100644
--- a/models/class_model.py
+++ b/models/class_model.py
@@ -1,7 +1,9 @@
 from sqlalchemy import *
 from datetime import datetime,time,date
+from database import *
 
-Base = declarative_base()        # 执行函数，返回一个基类
+
+# Base = declarative_base()        # 执行函数，返回一个基类
 
 class Classes( Base ):              # 在python里的名字
     __tablename__ = 'classes'       # 在数据库中表的名字
diff --git a/schemas/class_schema.py b/schemas/class_schema.py
index e69de29..05029b6 100644
--- a/schemas/class_schema.py
+++ b/schemas/class_schema.py
@@ -0,0 +1,24 @@
+from pydantic import BaseModel           # 导入pydantic模块下的BaseModel类
+from datetime import datetime,date       # 导入datetime模块下的datetime,date类
+
+
+# ————定义"创建班级"的"请求体"模型————
+class ClassCreate( BaseModel ):
+    class_no: str
+    class_name: str
+
+# ————定义"更新班级"的"请求体"模型————
+class ClassUpdate( BaseModel ):
+    class_no: str|None = None
+    class_name: str|None = None
+    start_date : date|None = None
+    end_date : date|None = None
+    created_at : datetime|None = None
+    update_at : datetime|None = None
+
+# ————定义"班级"的"响应体"模型————
+class ClassResponse( BaseModel ):
+    code:int = 200
+    detail:str = '执行成功'
+    total:int = 0
+    data:str|dict|list|tuple