diff --git a/scripts/installer.nsh b/scripts/installer.nsh
index 6f59f864a..c59545fe1 100644
--- a/scripts/installer.nsh
+++ b/scripts/installer.nsh
@@ -2,18 +2,34 @@
 ; Provides a "Complete Removal" option during uninstallation
 ; to delete .openclaw config and AppData resources.
 ; Handles both per-user and per-machine (all users) installations.
+; Supports Chinese (Simplified/Traditional) and English UI.
 
 !macro customUnInstall
-  ; Ask user if they want to completely remove all user data
+  ; Detect language: Chinese Simplified (2052), Chinese Traditional (1028)
+  ; $LANGUAGE is set by the NSIS installer/uninstaller language selection.
+  StrCmp $LANGUAGE "2052" _cu_useChinese
+  StrCmp $LANGUAGE "1028" _cu_useChinese
+
+  ; --- English message (default) ---
   MessageBox MB_YESNO|MB_ICONQUESTION \
-    "Do you want to completely remove all ClawX user data?$\r$\n$\r$\nThis will delete:$\r$\n  • .openclaw folder (configuration & skills)$\r$\n  • AppData\Local\ClawX (local app data)$\r$\n  • AppData\Roaming\ClawX (roaming app data)$\r$\n$\r$\nSelect 'No' to keep your data for future reinstallation." \
+    "Do you want to completely remove all ClawX user data?$\r$\n$\r$\nThis will delete:$\r$\n  • .openclaw folder (configuration & skills)$\r$\n  • AppData\Local\clawx (local app data)$\r$\n  • AppData\Roaming\clawx (roaming app data)$\r$\n$\r$\nSelect 'No' to keep your data for future reinstallation." \
     /SD IDNO IDYES _cu_removeData IDNO _cu_skipRemove
+  Goto _cu_afterPrompt
+
+  ; --- Chinese message ---
+  _cu_useChinese:
+  MessageBox MB_YESNO|MB_ICONQUESTION \
+    "是否完全移除所有 ClawX 用户数据？$\r$\n$\r$\n将删除以下内容：$\r$\n  • .openclaw 文件夹（配置和技能）$\r$\n  • AppData\Local\clawx（本地应用数据）$\r$\n  • AppData\Roaming\clawx（漫游应用数据）$\r$\n$\r$\n选择"否"可保留数据以便将来重新安装。" \
+    /SD IDNO IDYES _cu_removeData IDNO _cu_skipRemove
+
+  _cu_afterPrompt:
+  Goto _cu_skipRemove
 
   _cu_removeData:
     ; --- Always remove current user's data first ---
     RMDir /r "$PROFILE\.openclaw"
-    RMDir /r "$LOCALAPPDATA\ClawX"
-    RMDir /r "$APPDATA\ClawX"
+    RMDir /r "$LOCALAPPDATA\clawx"
+    RMDir /r "$APPDATA\clawx"
 
     ; --- For per-machine (all users) installs, enumerate all user profiles ---
     ; Registry key HKLM\...\ProfileList contains a subkey for each user SID.
@@ -43,8 +59,8 @@
 
     ; Remove .openclaw and AppData for this user profile
     RMDir /r "$R2\.openclaw"
-    RMDir /r "$R2\AppData\Local\ClawX"
-    RMDir /r "$R2\AppData\Roaming\ClawX"
+    RMDir /r "$R2\AppData\Local\clawx"
+    RMDir /r "$R2\AppData\Roaming\clawx"
 
   _cu_enumNext:
     IntOp $R0 $R0 + 1