diff --git a/docs/en/docs/x2openEuler/CommonOperation.md b/docs/en/docs/x2openEuler/CommonOperation.md
index bbd7c6268197013747c338e73886957988ec6cf0..240c8cf9bd70306d9eb22bf3cf936d95b05a0240 100644
--- a/docs/en/docs/x2openEuler/CommonOperation.md
+++ b/docs/en/docs/x2openEuler/CommonOperation.md
@@ -21,7 +21,7 @@
 3. (Optional) Manage repositories.
 
     > ![](public_sys-resources/icon-notice.gif) **NOTICE**  
-    > - Ensure that the added repositories of the target OS are supported by x2openEuler. Otherwise, the upgrade will fail. At least **everything** and **update** must be added.
+    > - Ensure that the added repositories of the target OS are supported by x2openEuler. Otherwise, the upgrade will fail. At least **everything**, **update**, and **EPOL** must be added.
     > - Modifying a repository may affect the normal running of other nodes that use the repository. Exercise caution when performing this operation.
     > - Deleting a repository may affect the normal running of other nodes that use the repository. Exercise caution when performing this operation.
 
diff --git a/docs/zh/docs/x2openEuler/CommonOperation.md b/docs/zh/docs/x2openEuler/CommonOperation.md
index e8d67516a9eb9590626a78ad7ff524ef6e92ed2f..05f89f8c310ddb858b56c7ed7c996d1a86427bde 100644
--- a/docs/zh/docs/x2openEuler/CommonOperation.md
+++ b/docs/zh/docs/x2openEuler/CommonOperation.md
@@ -22,7 +22,7 @@
 
     > ![](public_sys-resources/icon-notice.gif) **须知：**
     >
-    > - 请务必添加工具已支持的目标操作系统 repo 源，否则会导致升级出现异常，添加的 repo 源中最少需要包含 everything 和 update。
+    > - 请务必添加工具已支持的目标操作系统 repo 源，否则会导致升级出现异常，添加的 repo 源中至少需要包含 everything, update 和 EPOL。
     > - 修改 repo 源可能会导致使用该 repo 源的其他节点无法正常运行，请谨慎操作。
     > - 删除 repo 源可能会导致使用该 repo 源的其他节点无法正常运行，请谨慎操作。