diff --git a/README.md b/README.md
index 4b097e46..9b99954d 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ To add or update information:
 - Add/Update the yml file of conference/conf_type/conf_name.yml
 - Send a [pull request](https://github.com/ccfddl/ccf-deadlines/pulls)
 
-Tips: check [conferences recommended](.readme_assets/ccf_recommended_2022.pdf) and review [statistics](https://docs.qq.com/sheet/DR3F1Tm1jcnlzVFJ2)
+Tips: check [conferences recommended](https://www.ccf.org.cn/Academic_Evaluation/By_category/) or review [pdf](.readme_assets/ccf_recommended_2022.pdf)
 ## Conference Entry File
 Example file: conference/DB/sigmod.yml
 
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 51a4e04e..d9fb41c0 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -27,7 +27,7 @@
 - 增加/更新yml文件 conference/conf_type/conf_name.yml
 - 提交 [pull request](https://github.com/ccfddl/ccf-deadlines/pulls)
 
-提示: 可检查 [会议推荐目录](.readme_assets/ccf_recommended_2022.pdf) 和 [统计表格](https://docs.qq.com/sheet/DR3F1Tm1jcnlzVFJ2)
+提示: 可检查 [会议推荐目录](https://www.ccf.org.cn/Academic_Evaluation/By_category/) 或 [统计文件](.readme_assets/ccf_recommended_2022.pdf)
 
 ## 会议录入文件