diff --git a/app/src/main/java/xyz/monkeytong/hongbao/services/HongbaoService.java b/app/src/main/java/xyz/monkeytong/hongbao/services/HongbaoService.java
index ec2499a3..8d9014fb 100644
--- a/app/src/main/java/xyz/monkeytong/hongbao/services/HongbaoService.java
+++ b/app/src/main/java/xyz/monkeytong/hongbao/services/HongbaoService.java
@@ -124,6 +124,9 @@ private boolean watchNotifications(AccessibilityEvent event) {
         if (parcelable instanceof Notification) {
             Notification notification = (Notification) parcelable;
             try {
+                /* 清除signature,避免进入会话后误判*/
+                signature.cleanSignature();
+
                 notification.contentIntent.send();
             } catch (PendingIntent.CanceledException e) {
                 e.printStackTrace();
diff --git a/app/src/main/java/xyz/monkeytong/hongbao/utils/HongbaoSignature.java b/app/src/main/java/xyz/monkeytong/hongbao/utils/HongbaoSignature.java
index 555d63a6..419a8781 100644
--- a/app/src/main/java/xyz/monkeytong/hongbao/utils/HongbaoSignature.java
+++ b/app/src/main/java/xyz/monkeytong/hongbao/utils/HongbaoSignature.java
@@ -61,4 +61,11 @@ private String[] getSenderContentDescriptionFromNode(AccessibilityNodeInfo node)
         }
         return result;
     }
+
+    public void cleanSignature(){
+        this.content = "";
+        this.time = "";
+        this.sender ="";
+    }
+
 }