diff --git a/JianGongYun/TRTC/ViewModels/SettingWindowViewModel.cs b/JianGongYun/TRTC/ViewModels/SettingWindowViewModel.cs
index 86c8702..bda8fe4 100644
--- a/JianGongYun/TRTC/ViewModels/SettingWindowViewModel.cs
+++ b/JianGongYun/TRTC/ViewModels/SettingWindowViewModel.cs
@@ -798,7 +798,7 @@ namespace JianGongYun.TRTC.ViewModels
             {
                 var videoResolution = TRTCVideoResolution.TRTCVideoResolution_1920_1080;
                 uint videoBitrate = 2000;
-                switch (LiveMainLevel)
+                switch (LiveSubLevel)
                 {
                     case LiveLevelEnum.Low:
                         videoResolution = TRTCVideoResolution.TRTCVideoResolution_960_540;