diff --git a/dao/e_dao.py b/dao/e_dao.py
new file mode 100644
index 0000000..015e65d
--- /dev/null
+++ b/dao/e_dao.py
@@ -0,0 +1,52 @@
+from http.client import HTTPException
+
+from model.e_model import Employment
+from fastapi import HTTPException
+
+def get_employment_dao(db):
+    try:
+        r = db.query(Employment).all()
+    except Exception as e:
+        db.rollback()
+        raise HTTPException(status_code=500, detail=f'查询失败:str(e)')
+    else:
+        db.commit()
+    return [{'stu_id':i.stu_id,'class_name':i.class_name} for i in r ]
+
+
+def wq_employment_dao(o,db):
+    try:
+        o1 = Employment(**o)
+        db.add(o1)
+    except Exception as e:
+        db.rollback()
+        raise HTTPException(status_code=500, detail=f'添加失败:str(e)')
+    else:
+        db.commit()
+        return 1
+
+def upd_employment_dao(e,db):
+    try:
+        rows = db.query(Employment).filter(Employment.stu_id == e['stu_id']).update(e)
+    except:
+        db.rollback()
+        raise HTTPException(status_code=500, detail='更新异常，请稍后再执行！')
+    else:
+        db.commit()
+        return 1
+
+def del_employment_dao(stu_id,db):
+    try:
+        row = db.query(Employment).filter(Employment.stu_id == stu_id).all()
+        if not row:
+            raise HTTPException(status_code=404,detail='记录不存在')
+        for i in row:
+            if i.deleted == 0:
+                db.query(Employment).filter(Employment.stu_id == i.stu_id).update({'deleted':1})
+    except Exception as e:
+        db.rollback()
+        raise HTTPException(status_code=500,detail=f'删除失败:{str(e)}')
+    else:
+        db.commit()
+        return 1
+