diff --git a/api/class_api.py b/api/class_api.py
new file mode 100644
index 0000000..6f5143c
--- /dev/null
+++ b/api/class_api.py
@@ -0,0 +1,78 @@
+from fastapi import APIRouter,Depends,HTTPException,Query
+from dao.class_dao import add_class_dao, update_class_dao, delete_class_dao, hard_delete_class_dao,class_no_exist,get_class_list_dao,get_class_by_id_dao
+from schemas.class_request import ClassCreate,ClassResponse,ClassUpdate
+from database import get_db
+from typing import Optional
+from sqlalchemy.orm import Session
+class_app = APIRouter()
+@class_app.post('',response_model=ClassResponse)
+def add_class(c:ClassCreate,db=Depends(get_db)):
+    if class_no_exist(c.class_id,db):
+        raise HTTPException(status_code=404,detail='该编号已经存在')
+    ok,result = add_class_dao(c.model_dump(),db)
+    if not ok:
+        raise HTTPException(status_code=500,detail='服务器繁忙或指定的老师不存在')
+    return ClassResponse(totals=1,data=result)
+@class_app.put('{id}')
+def update_class(id:int,c:ClassUpdate,db=Depends(get_db)):
+    d = c.model_dump()
+    r = update_class_dao(id=id ,update_data=d,db=db)
+    if not r:
+        raise HTTPException(status_code=500,detail='更新失败')
+    return{'code':200,'total':1,'detail':'更新成功'}
+'''
+@class_app.get('')
+def get_class(id:int,db=Depends(get_db),page:int=1,page_size:int=10):
+    rows = get_class_dao(id=id,db=db,page=page,page_size=page_size)
+    if rows:
+        return rows
+    raise HTTPException(status_code=404,detail='该班级不存在')
+'''
+@class_app.get('')
+def get_classes(
+        id: Optional[int] = Query(None, description="班级ID"),
+        class_id: Optional[str] = Query(None, description="班级编号"),
+        class_name: Optional[str] = Query(None, description="班级名称（支持模糊搜索）"),
+        ht_id: Optional[int] = Query(None, description="班主任ID"),
+        t_id: Optional[int] = Query(None, description="教师ID"),
+        page: int = Query(1, ge=1, description="页码"),
+        page_size: int = Query(10, ge=1, le=100, description="每页条数"),
+        db: Session = Depends(get_db)
+):
+    # 如果明确传了 id，当作单条查询处理
+    if id is not None:
+        single_class = get_class_by_id_dao(id=id, db=db)
+        if not single_class:
+            raise HTTPException(status_code=404, detail="该班级不存在")
+        return single_class
+
+    # 多条件列表查询
+    total, items = get_class_list_dao(
+        db=db,
+        class_no=class_id,
+        class_name=class_name,
+        ht_id=ht_id,
+        t_id=t_id,
+        page=page,
+        page_size=page_size
+    )
+
+    return {
+        "total": total,
+        "page": page,
+        "page_size": page_size,
+        "items": items
+    }
+@class_app.delete('/{id}') #软删除
+def delete_class(id:int,db=Depends(get_db)):
+    rows = delete_class_dao(id=id,db=db)
+    if not rows:
+            raise HTTPException(status_code=404,detail='该班级不存在或已删除')
+    return{'code':200,'total':rows,'detail':'删除成功'}
+
+@class_app.delete('{id}/hard')
+def hard_delete_class(id:int,db=Depends(get_db)):
+    rows = hard_delete_class_dao(id=id,db=db)
+    if not rows:
+        raise HTTPException(status_code=404,detail='该班级不存在')
+    return{'code':200,'total':rows,'detail':'物理删除成功'}