diff --git a/maintray.cpp b/maintray.cpp
index 3d74fb4..f416010 100644
--- a/maintray.cpp
+++ b/maintray.cpp
@@ -24,6 +24,7 @@ MainTray::MainTray(QByteArray username, QByteArray password, QObject *parent): Q
     connect(netctrl, NetController::stateChanged, this, [this](NetController::State state){
         switch (state) {
         case NetController::Online:
+            isForceLogin = false;
             setIcon(QIcon(tr(":/icon/favicon.ico")));
             if(!muteAction->isChecked())
                 showMessage(tr("网络已连接"),tr("校园网登陆成功"), this->icon(), msgDur);
@@ -31,11 +32,13 @@ MainTray::MainTray(QByteArray username, QByteArray password, QObject *parent): Q
             logoutAction->setEnabled(true);
             break;
         case NetController::Offline:
-            setIcon(QIcon(tr(":/icon/offline.ico")));
-            if(!muteAction->isChecked())
-                showMessage(tr("网络已断开"),tr("校园网已注销"), this->icon(), msgDur);
-            loginAction->setEnabled(true);
-            logoutAction->setEnabled(true);
+            if(!isForceLogin){
+                setIcon(QIcon(tr(":/icon/offline.ico")));
+                if(!muteAction->isChecked())
+                    showMessage(tr("网络已断开"),tr("校园网已注销"), this->icon(), msgDur);
+                loginAction->setEnabled(true);
+                logoutAction->setEnabled(true);
+            }
             break;
         case NetController::Disconnected:
             setIcon(QIcon(tr(":/icon/offline.ico")));
@@ -75,6 +78,7 @@ MainTray::MainTray(QByteArray username, QByteArray password, QObject *parent): Q
     muteAction->setToolTip(tr("勿扰模式下不会发出通知"));
 
     connect(loginAction, QAction::triggered, this,[this](){
+        isForceLogin = true;
         netctrl->sendLogoutRequest();
         netctrl->sendLoginRequest();
         isForceLogout = false;
diff --git a/maintray.h b/maintray.h
index 31394ec..3e3dc0b 100644
--- a/maintray.h
+++ b/maintray.h
@@ -28,7 +28,8 @@ private:
     OptionsWindow opWindow;
     QTimer *autoLoginTimer; //自动重连定时器
 
-    bool isForceLogout = false; //自动重连flag
+    bool isForceLogout = false;
+    bool isForceLogin = false;
 
     NetController::State currentState = NetController::Unknown;  //当前状态
 
@@ -39,7 +40,7 @@ private:
     void setAutoStart(bool set);
 
     QByteArray user, passwd;
-    int msgDur = 1000;   //通知持续时间
+    int msgDur = 500;   //通知持续时间
     int checkInterval = 1000;   //查询状态定时器周期
 
 
diff --git a/netcontroller.cpp b/netcontroller.cpp
index d21d108..c3e8459 100644
--- a/netcontroller.cpp
+++ b/netcontroller.cpp
@@ -24,8 +24,9 @@ NetController::NetController(QByteArray id, QByteArray passwd, QObject *parent)
 void NetController::checkState()
 {
     sendCheckRequest();
-    if(NEUState==Offline&&lastState!=Offline)
+    if(NEUState == Offline && lastState != Offline && offlineCount++ > 1)
     {
+        offlineCount = 0;
         lastState = Offline;
         emit stateChanged(lastState);
     }
@@ -97,6 +98,7 @@ void NetController::handleResponse(QNetworkReply *reply)
             }
             else
             {
+                offlineCount = 0;
                 NEUState = Online;
                 QStringList infoList = status.split(',');
                 emit sendInfo(infoList[0], infoList[1], infoList[2], infoList[5]);
@@ -104,6 +106,7 @@ void NetController::handleResponse(QNetworkReply *reply)
         }
         else
         {
+            offlineCount = 0;
             NEUState = Disconnected;
         }
     }
diff --git a/netcontroller.h b/netcontroller.h
index 0d8931d..7b3ba39 100644
--- a/netcontroller.h
+++ b/netcontroller.h
@@ -28,6 +28,7 @@ private:
     QString offlineString = "not_online";
     QByteArray checkParam, username, password;
     State NEUState = Unknown, lastState = Unknown;
+    int offlineCount = 0;
 
     QNetworkAccessManager manager;
     QNetworkRequest request;