diff --git a/web/commons/models/material.py b/web/commons/models/material.py
index 9811b7a..3263903 100644
--- a/web/commons/models/material.py
+++ b/web/commons/models/material.py
@@ -6,21 +6,26 @@ from core.extensions import db
 
 
 class Material(db.Model, Model, OperationTrackMixin):
+    """材料表"""
+    __tablename__ = 'material'
+    _db = db
+
     id = Column('ID', String(128), primary_key=True)
     parent_id = Column('PARENT_ID', String(128))
-    category_1 = Column('CATEGORY1', String(128), default='', comment='分类1')
-    category_2 = Column('CATEGORY2', String(128), default='', comment='分类2')
-    category_3 = Column('CATEGORY3', String(128), default='', comment='分类3')
-    category_4 = Column('CATEGORY4', String(128), default='', comment='分类4')
-    name = Column('NAME', String(128), default='', comment='名称')
-    unit = Column('UNIT', String(128), default='', comment='单位')
-    spec = Column('SPEC', String(128), default='', comment='规格')
-    tax = Column('TAX', Integer, default=0, comment='税率（%）')
-    is_builtin = Column('IS_BUILTIN', Integer, default=0, comment='是否初始内建类型（不允许删除）')
-    type = Column('TYPE', Integer, default=0, comment='材料类别（主材、地材）')
-    is_tree = Column('IS_TREE', Integer, default=0, comment='是否树')
+    category1 = Column('CATEGORY1', String(128), comment='分类1')
+    category2 = Column('CATEGORY2', String(128), comment='分类2')
+    category3 = Column('CATEGORY3', String(128), comment='分类3')
+    category4 = Column('CATEGORY4', String(128), comment='分类4')
+    name = Column('NAME', String(128), comment='名称')
+    unit = Column('UNIT', String(128), comment='单位')
+    spec = Column('SPEC', String(128), comment='规格')
+    tax = Column('TAX', Integer, comment='税率（%）')
+    is_builtin = Column('IS_BUILTIN', Integer, comment='是否初始内建类型（不允许删除）')
+    type = Column('TYPE', Integer, comment='材料类别（主材、地材）')
+    is_tree = Column('IS_TREE', Integer, comment='是否树')
+    sort = Column('SORT', Integer, default=0, comment='排序')
+    code = Column('CODE', String(20), comment='材料编码')
 
-    __tablename__ = 'MATERIAL'
     __table_args__ = (
         {'comment': '材料'},
     )
@@ -29,11 +34,11 @@ class Material(db.Model, Model, OperationTrackMixin):
         super().__init__(*args, **kwargs)
 
     @classmethod
-    def get_by_key(cls, id):
-        return cls.query.filter(cls.id == id).one_or_none()
+    def get_by_key(cls, code):
+        return cls.query.filter(cls.code == code).one_or_none()
 
     def upsert(self):
-        result = self.get_by_key(self.id)
+        result = self.get_by_key(self.code)
         if not result:
             session = db.session
             session.add(self)