diff --git a/dita/RTC-NG/config/keys-rtc-ng-links-cpp.ditamap b/dita/RTC-NG/config/keys-rtc-ng-links-cpp.ditamap
index fab598a2068..10e24eab522 100644
--- a/dita/RTC-NG/config/keys-rtc-ng-links-cpp.ditamap
+++ b/dita/RTC-NG/config/keys-rtc-ng-links-cpp.ditamap
@@ -82,7 +82,7 @@
                 </keywords>
             </topicmeta>
         </keydef>
-        <keydef keys="alpha-effect" href="https://doc.shengwang.cn/doc/rtc/window/best-practice/alpha-effect" scope="external" format="html">
+        <keydef keys="alpha-effect" href="https://doc.shengwang.cn/doc/rtc/windows/best-practice/alpha-effect" scope="external" format="html">
             <topicmeta>
                 <keywords>
                     <keyword>实现 Alpha 透明特效</keyword>