diff --git a/README.md b/README.md
index da2a611..c0a68dd 100644
--- a/README.md
+++ b/README.md
@@ -82,6 +82,6 @@ api-billing-system/
 
 - [x] 项目文档	**README.md**
 - [x] 数据库文档    **Database.md**
-- [ ] 错误码文档    **ErrorCode.md**
+- [x] 错误码文档    **ErrorCode.md**
 - [x] API定义文档  **APIDefine.md**
 - [ ] API文档
\ No newline at end of file