diff --git a/lib/main/lockDetail/monitoring/star_chart_h264/star_chart_logic.dart b/lib/main/lockDetail/monitoring/star_chart_h264/star_chart_logic.dart
index dc69806b..2d6031cc 100644
--- a/lib/main/lockDetail/monitoring/star_chart_h264/star_chart_logic.dart
+++ b/lib/main/lockDetail/monitoring/star_chart_h264/star_chart_logic.dart
@@ -121,6 +121,12 @@ class StarChartLogic extends BaseGetXController {
   }
 
   Future<void> stopProcessing() async {
+    // 检查 voiceProcessor 是否已经初始化
+    if (state.voiceProcessor == null) {
+      state.errorMessage.value = 'Voice processor is not initialized.';
+      return;
+    }
+
     state.isButtonDisabled.value = true;
     try {
       await state.voiceProcessor?.stop();