diff --git a/md.md b/md.md
index fdfdf9d..f4cadb0 100644
--- a/md.md
+++ b/md.md
@@ -11,7 +11,13 @@ id | SUK | platform | salestart | mainphoto | uploaddate
 id | item_id | name | region
 
 表 item_price
-id | item_id | price_type | price | sources | update
+id | item_id | shop_id | price_type | price | sources | update
 
 表 item_const
 id | item_id | shop_id | const | update
+
+表 item_tag
+id | tag | update
+
+表 item_tag_link
+id | tag_id | item_id | update