diff --git a/api/student.py b/api/student.py
index 9299659..99daec7 100644
--- a/api/student.py
+++ b/api/student.py
@@ -6,7 +6,7 @@ from schemas.student import StudentCreate
 student_router = APIRouter()
 
 @student_router.post("/student")
-def create_student(request:StudentCreate,db:Session,create = Depends(create_students)):
+def create_student(request:StudentCreate,db:Session=Depends(create_students)):
     d = request.model_dump()
     r = create_students(d,db)
     if not r:
diff --git a/models/class_model.py b/models/class_model.py
index 50ff873..dc6ce4a 100644
--- a/models/class_model.py
+++ b/models/class_model.py
@@ -35,7 +35,7 @@ class Classes( Base ):              # 在python里的名字
                        , nullable = False         # 声明是"非空"
                        )
     # ————创建班级"更新时间"的字段名————
-    updated_at = Column( DATETIME         # 声明是字段数据类型是"日期时间"
+    update_at = Column( DATETIME         # 声明是字段数据类型是"日期时间"
                        , default=datetime.now  #声明是第一次更新的时间就是第一次创建的时间一致
                        , onupdate=datetime.now   # 声明"最后修改的时间"
                        , server_default=text("CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP")