diff --git a/Grades.py b/Grades.py
new file mode 100644
index 0000000..b3be62c
--- /dev/null
+++ b/Grades.py
@@ -0,0 +1,43 @@
+class WlScore(Base):
+    __tablename__ = 'wl_score'
+
+    score_id = Column(Integer
+                    ,primary_key=True
+                    ,autoincrement=True
+                    ,comment='序号'
+                    )
+
+    stu_id = Column( Integer
+                    ,ForeignKey('wl_student.stu_id')
+                    ,comment='学生编号')
+
+    class_id = Colimn( Integer
+                    ,ForeignKey('wl_class.class_id')
+                    ,comment='学生编号')
+
+    exam_order = Column(Integer
+                        , nullable=False
+                        , comment="考核序次")
+
+    score=Column(Numeric(5, 2)
+                 , comment="成绩")
+
+    create_time = Column(DATETIME
+                         , nullable=False
+                         , default=datetime.now
+                         , comment="作成时间")
+
+    update_time = Column(DATETIME
+                         , nullable=False
+                         , default=datetime.now
+                         , onupdate=datetime.now
+                         , comment="更新时间")
+
+    delete_status = Column(
+        Integer,default=0,comment='删除状态：0未删除，1已删除')
+
+    delete_time = Column(DATETIME,comment='删除时间')
+
+
+
+Base.metadata.create_all(engine)