diff --git a/dita/RTC-NG/API/callback_irtcengineeventhandler_onfirstlocalvideoframepublished.dita b/dita/RTC-NG/API/callback_irtcengineeventhandler_onfirstlocalvideoframepublished.dita
index 67ef9372f78..31f76c4af58 100644
--- a/dita/RTC-NG/API/callback_irtcengineeventhandler_onfirstlocalvideoframepublished.dita
+++ b/dita/RTC-NG/API/callback_irtcengineeventhandler_onfirstlocalvideoframepublished.dita
@@ -35,8 +35,8 @@
     connection: RtcConnection,
     elapsed: number
   ): void;</codeblock>
-            <codeblock props="flutter" outputclass="language-dart">final void Function(VideoSourceType source, int elapsed)?
-    onFirstLocalVideoFramePublished;</codeblock>
+            <codeblock props="flutter" outputclass="language-dart">final void Function(RtcConnection connection, int elapsed)?
+      onFirstLocalVideoFramePublished;</codeblock>
             <codeblock props="reserve" outputclass="language-cpp"></codeblock></p>
         </section>
         <section id="detailed_desc">
@@ -55,11 +55,11 @@
                 <pt />
                 <pd />
             </plentry>
-            <plentry props="unity electron rn cs">
+            <plentry props="unity electron rn flutter cs">
                 <pt>connection</pt>
                 <pd>Connection 信息。详见 <xref keyref="RtcConnection" />。</pd>
             </plentry>
-                <plentry conkeyref="onLocalVideoStateChanged/source" props="native unreal bp flutter">
+                <plentry conkeyref="onLocalVideoStateChanged/source" props="native unreal bp">
                     <pt />
                     <pd />
                 </plentry>