diff --git a/core/function-impl/mogo-core-function-hmi/src/main/java/com/mogo/eagle/core/function/main/MainLauncherActivity.java b/core/function-impl/mogo-core-function-hmi/src/main/java/com/mogo/eagle/core/function/main/MainLauncherActivity.java
index 8f171372f6..010768e236 100644
--- a/core/function-impl/mogo-core-function-hmi/src/main/java/com/mogo/eagle/core/function/main/MainLauncherActivity.java
+++ b/core/function-impl/mogo-core-function-hmi/src/main/java/com/mogo/eagle/core/function/main/MainLauncherActivity.java
@@ -413,7 +413,9 @@ public class MainLauncherActivity extends MainActivity implements IMogoIntentLis
                     }
                 }
 //                Log.d("liyz", "connectBluetooth macAddress = " + macAddress + "---pos = " + pos);
-                method.invoke(mAreadlyConnectedList.get(pos));
+                if (mAreadlyConnectedList.size() > pos && (pos >= 0)) {
+                    method.invoke(mAreadlyConnectedList.get(pos));
+                }
 
             } catch (NoSuchMethodException e) {
                 e.printStackTrace();