diff --git a/dita/RTC-NG/API/api_irtcengine_startaudiomixing.dita b/dita/RTC-NG/API/api_irtcengine_startaudiomixing.dita
index 6d7abf09aeb..2b31ba36bac 100644
--- a/dita/RTC-NG/API/api_irtcengine_startaudiomixing.dita
+++ b/dita/RTC-NG/API/api_irtcengine_startaudiomixing.dita
@@ -53,7 +53,6 @@
             <section id="parameters" deliveryTarget="details">
             <title>参数</title>
             <parml>
-
             <plentry props="native unreal bp unity cs" conkeyref="playEffect3/filepath">
                 <pt/>
                 <pd/>
diff --git a/dita/RTC-NG/API/rtc_lite_api.dita b/dita/RTC-NG/API/rtc_lite_api.dita
index 4f98a9b05b6..50e08e2e163 100644
--- a/dita/RTC-NG/API/rtc_lite_api.dita
+++ b/dita/RTC-NG/API/rtc_lite_api.dita
@@ -164,7 +164,7 @@
             <li><xref keyref="queryDeviceScore"/></li>
             <li props="cpp unreal bp"><xref keyref="queryInterface"/></li>
             <li><xref keyref="rate"/></li>
-            <li><xref keyref="registerAudioEncodedFrameObserver"/></li>
+            <li>在 <xref keyref="registerAudioEncodedFrameObserver"/> 中，<parmname>config</parmname> 中的 <parmname>encodingType</parmname> 仅支持 OPUS 编码格式。</li>
             <li props="android apple"><xref keyref="registerAudioFrameObserver"/></li>
             <li props="unity"><xref keyref="registerAudioFrameObserver"/></li>
             <li><xref keyref="registerAudioSpectrumObserver"/></li>