diff --git a/maintray.cpp b/maintray.cpp
index 7ba14e6..b8eae9d 100644
--- a/maintray.cpp
+++ b/maintray.cpp
@@ -265,9 +265,9 @@ void MainTray::updateUserInfo(QByteArray id, QByteArray pass, int traffic)
 void MainTray::handleState(NetController::State state)
 {
     if(state!=currentState){
-        writeLog(tr("Old state: [") + QString::number(currentState) + tr("]; New state: [") + QString::number(state) + tr("]."));
         switch (state) {
         case NetController::Online:
+            writeLog(tr("Old state: [") + QString::number(currentState) + tr("]; New state: [") + QString::number(state) + tr("]."));
             isForceLogin = false;
             setIcon(QIcon(tr(":/icon/favicon.ico")));
             if(!muteAction->isChecked())
@@ -278,6 +278,7 @@ void MainTray::handleState(NetController::State state)
         case NetController::Offline:
             if(currentState == NetController::WrongPass || currentState == NetController::Owed)
                 return;
+            writeLog(tr("Old state: [") + QString::number(currentState) + tr("]; New state: [") + QString::number(state) + tr("]."));
             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);
@@ -290,6 +291,7 @@ void MainTray::handleState(NetController::State state)
 
             break;
         case NetController::Disconnected:
+            writeLog(tr("Old state: [") + QString::number(currentState) + tr("]; New state: [") + QString::number(state) + tr("]."));
             setIcon(QIcon(tr(":/icon/offline.ico")));
             if(!muteAction->isChecked())
                 showMessage(tr("网络已断开"),tr("无法连接至校园网"), this->icon(), msgDur);
@@ -297,12 +299,14 @@ void MainTray::handleState(NetController::State state)
             logoutAction->setDisabled(true);
             break;
         case NetController::WrongPass:
+            writeLog(tr("Old state: [") + QString::number(currentState) + tr("]; New state: [") + QString::number(state) + tr("]."));
             setIcon(QIcon(tr(":/icon/offline.ico")));
             if(!muteAction->isChecked())
                 showMessage(tr("登陆失败"),tr("密码错误"), this->icon(), msgDur);
             break;
         case NetController::Owed:
             setIcon(QIcon(tr(":/icon/offline.ico")));
+            writeLog(tr("Old state: [") + QString::number(currentState) + tr("]; New state: [") + QString::number(state) + tr("]."));
             if(!muteAction->isChecked())
                 showMessage(tr("登陆失败"),tr("已欠费"), this->icon(), msgDur);
             break;
diff --git a/maintray.h b/maintray.h
index dc25bc9..22de61f 100644
--- a/maintray.h
+++ b/maintray.h
@@ -12,7 +12,6 @@
 #include <QTimer>
 #include <QApplication>
 #include <QFile>
-#include <QDebug>
 
 class MainTray: public QSystemTrayIcon
 {
diff --git a/netcontroller.cpp b/netcontroller.cpp
index 619d303..03899c6 100644
--- a/netcontroller.cpp
+++ b/netcontroller.cpp
@@ -96,15 +96,15 @@ void NetController::handleResponse(QNetworkReply *reply)
     {
         QString loginPage(reply->readAll());
         if(loginPage.contains(QString("已欠费"))){//欠费
-            sendLog(tr("Get [Owed] Response."));
+            sendLog(tr("Get [Owed] response."));
             emit sendState(Owed);
         }
         else if(loginPage.contains("Password is error")){//密码错误
-            sendLog(tr("Get [Wrong Password] Response."));
+            sendLog(tr("Get [Wrong Password] response."));
             emit sendState(WrongPass);
         }
         else if(loginPage.contains("网络已连接")){//登陆成功
-            sendLog(tr("Get [Login success] Response."));
+            sendLog(tr("Get [Login success] response."));
             emit sendState(Online);
         }
     }