diff --git a/mainwidget.cpp b/mainwidget.cpp
index d3230b4..1550075 100644
--- a/mainwidget.cpp
+++ b/mainwidget.cpp
@@ -99,13 +99,18 @@ void MainWidget::updateUi()
     ui->textLabel->setText(pInfo->text);
 
     //显示倒计时
-    int hour,min,sec,nTotalSecs;
-    nTotalSecs = pInfo->realCountDownInSeconds;
-    sec  = nTotalSecs % 60;
-    //    min  = nTotalSecs / 60 % 60;
-    min  = nTotalSecs / 60 ;  //min显示大于60
-    hour = nTotalSecs / 3600;
-    QString str = QString("%1:%2").arg(min,2,10,QLatin1Char('0')).arg(sec,2,10,QLatin1Char('0'));
+    QString str = "";
+    if(pInfo->realCountDownInSeconds < 0){
+        str = "";
+    }else{
+        int hour,min,sec,nTotalSecs;
+        nTotalSecs = pInfo->realCountDownInSeconds;
+        sec  = nTotalSecs % 60;
+        //    min  = nTotalSecs / 60 % 60;
+        min  = nTotalSecs / 60 ;  //min显示大于60
+        hour = nTotalSecs / 3600;
+        str = QString("%1:%2").arg(min,2,10,QLatin1Char('0')).arg(sec,2,10,QLatin1Char('0'));
+    }
     ui->countdownLabel->setText(str);
 }
 
@@ -156,7 +161,7 @@ void MainWidget::onWsConnectedStatusChanged(int status)
     updateUi();
 }
 
-void MainWidget::onNewPatientMergencyInfo(QString firstAidId, QString name, QString content, quint64 realCountDownInSeconds)
+void MainWidget::onNewPatientMergencyInfo(QString firstAidId, QString name, QString content, qint64 realCountDownInSeconds)
 {
     //TODO 此处是否需要加锁处理
     PatientEmergencyInfo *pInfo = new PatientEmergencyInfo(firstAidId,name,content,realCountDownInSeconds);
diff --git a/mainwidget.h b/mainwidget.h
index 9166d9b..b1f6511 100644
--- a/mainwidget.h
+++ b/mainwidget.h
@@ -36,7 +36,7 @@ private:
 public slots:
     void updateUi();
     void onWsConnectedStatusChanged(int);
-    void onNewPatientMergencyInfo(QString firstAidId,QString name,QString content,quint64 realCountDownInSeconds);
+    void onNewPatientMergencyInfo(QString firstAidId,QString name,QString content,qint64 realCountDownInSeconds);
     void onPatientMergencyStatusChanged(QString firstAidId,QString time,QString status);
     void addPatientToList(PatientEmergencyInfo *);
     void deletePatientFromList(QString firstAidId);
diff --git a/patientemergencyinfo.h b/patientemergencyinfo.h
index 2a492b7..c693f44 100644
--- a/patientemergencyinfo.h
+++ b/patientemergencyinfo.h
@@ -13,7 +13,7 @@ public:
     QString id;
     QString name;
     QString text;
-    quint64 realCountDownInSeconds;
+    qint64 realCountDownInSeconds;
 
 signals:
 
diff --git a/websocketservice.cpp b/websocketservice.cpp
index 918b687..1970982 100644
--- a/websocketservice.cpp
+++ b/websocketservice.cpp
@@ -120,7 +120,7 @@ void WebsocketService::handleWsButtonStartMsg(QJsonObject jobj)
     QString firstAidId = jobj.take("firstAidId").toString();
     QString name = jobj.take("name").toString();
     QString content = jobj.take("content").toString();
-    quint64 realCountdown =  jobj.take("realCountdown").toString().toInt(0) / 1000;
+    qint64 realCountdown =  jobj.take("realCountdown").toString("-1000").toInt(0) / 1000;
     emit newPatientMergencyInfo(firstAidId,name,content,realCountdown);
 }
 
diff --git a/websocketservice.h b/websocketservice.h
index f8bec9a..b0e5b3f 100644
--- a/websocketservice.h
+++ b/websocketservice.h
@@ -25,7 +25,7 @@ private:
 signals:
     void wsConnectedStatusChanged(int);
     //void newPatientMergencyInfo(PatientEmergencyInfo *);
-    void newPatientMergencyInfo(QString firstAidId,QString name,QString content,quint64 realCountDownInSeconds);
+    void newPatientMergencyInfo(QString firstAidId,QString name,QString content,qint64 realCountDownInSeconds);
     void patientMergencyStatusChanged(QString firstAidId,QString time,QString status);
 public slots:
     void onConnected();