diff --git a/dita/RTC-NG/API/api_imediaplayer_getstreamcount.dita b/dita/RTC-NG/API/api_imediaplayer_getstreamcount.dita
index 93254aa3690..332f9f965ce 100644
--- a/dita/RTC-NG/API/api_imediaplayer_getstreamcount.dita
+++ b/dita/RTC-NG/API/api_imediaplayer_getstreamcount.dita
@@ -24,7 +24,7 @@
         </section>
         <section id="detailed_desc">
             <title>详情</title>
-            <note type="attention" id="note">你需要在 <xref keyref="open" /> 后调用该方法。</note> </section>
+            <note type="attention" id="note">请在 <xref keyref="open"/> 后并收到 <xref keyref="onPlayerSourceStateChanged" /> 回调报告播放状态为 <apiname keyref="PLAYER_STATE_OPEN_COMPLETED" /> 后再调用调用该方法。</note> </section>
         <section id="parameters" props="cpp unreal bp unity cs">
             <title>参数</title>
             <parml>
@@ -41,4 +41,4 @@
             <li>&lt; 0: 方法调用失败，详见 <xref keyref="MEDIA_PLAYER_ERROR" />。</li>
             </ul> </section>
     </refbody>
-</reference>
\ No newline at end of file
+</reference>