diff --git a/PythonProject/model/all_model.py b/PythonProject/model/all_model.py
index a2be52c..c8904a8 100644
--- a/PythonProject/model/all_model.py
+++ b/PythonProject/model/all_model.py
@@ -10,6 +10,11 @@ class Student_Model(Base):
                     , autoincrement=True
                     ,comment='学生编号')
 
+    class_id = Column(Integer
+                    ,ForeignKey('wl_class.class_id')
+                    ,comment='班级编号'
+                    )
+
     stu_name=Column(String(100),comment='学生姓名')
 
     age=Column(Integer,comment='年龄')
@@ -49,12 +54,6 @@ class ClassManagement(Base):
 
     class_id= Column(Integer, primary_key=True, autoincrement=True,comment='班级编号')
 
-    stu_id = Column(Integer
-                    ,ForeignKey('wl_student.stu_id')
-                    ,nullable=False
-                    ,comment='学生编号'
-                    )
-
     class_name = Column(String(100), comment='班级姓名')
 
     start_class_date = Column(DATE,comment='开课时间')