diff --git a/README.md b/README.md
index e7b7fc1..44357a2 100644
--- a/README.md
+++ b/README.md
@@ -16,10 +16,13 @@
 3.更新 update_tea_dao:\
 4.逻辑删除 delete_tea_dao:\
 **tea_model数据库建表文件**\
+1.教师表\
 字段名：id、name、sex、class_id、sub（学科）\
 home_place specialty（专业）、start_time（入职时间）\
 work_experience、collage、creat_date、update_date\
 is_delete、delete_time\
+2.学科表\
+字段名：name(科目名字)
 **schema 请求体、响应体**\
 请求体：设置了两个，一个带自增组件用于查询\
 一个不带自增组件，新增用；\
diff --git a/Teachers/model/tea_model.py b/Teachers/model/tea_model.py
index 68a09c4..986d7fe 100644
--- a/Teachers/model/tea_model.py
+++ b/Teachers/model/tea_model.py
@@ -6,6 +6,7 @@ import enum
 class Gender(str,enum.Enum):
     m = '男'
     f = '女'
+    h = '未知'
 
 class Tea(Base):
     __tablename__ = 'teachers'
@@ -44,5 +45,11 @@ class Tea(Base):
                          ,comment='更新时间')
     is_delete = Column(Boolean,default=False,comment='是否删除')
     delete_time = Column(DateTime)
-
+#科目表
+class Sub(Base):
+    __tablename__ = 'subject'
+    name = Column(String(50)
+                    , primary_key=True
+                    ,nullable=False
+                    ,comment='科目名字')