diff --git a/src/frontend/tab-pages/lanpage.cpp b/src/frontend/tab-pages/lanpage.cpp
index 7b5f4c93..27799a92 100644
--- a/src/frontend/tab-pages/lanpage.cpp
+++ b/src/frontend/tab-pages/lanpage.cpp
@@ -416,10 +416,10 @@ void LanPage::constructConnectionArea()
 
         }
     }
-    if (m_inactivatedLanListWidget->count() < 4) {
-        m_inactivatedLanListWidget->setFixedWidth(383);
+    if (m_inactivatedLanListWidget->count() < MAX_ITEMS) {
+        m_inactivatedLanListWidget->setFixedWidth(MIN_WIDTH);
     } else {
-        m_inactivatedLanListWidget->setFixedWidth(400);
+        m_inactivatedLanListWidget->setFixedWidth(MAX_WIDTH);
     }
     return;
 }
@@ -462,8 +462,8 @@ bool LanPage::removeConnectionItem(QMap<QString, QListWidgetItem *> &connectMap,
             p_listWidgetItem = nullptr;
 
             iter = connectMap.erase(iter);
-            if (m_inactivatedLanListWidget->count() < 4) {
-                m_inactivatedLanListWidget->setFixedWidth(383);
+            if (m_inactivatedLanListWidget->count() < MAX_ITEMS) {
+                m_inactivatedLanListWidget->setFixedWidth(MIN_WIDTH);
             }
             return true;
         }
@@ -515,8 +515,8 @@ void LanPage::onAddConnection(QString uuid)               //新增一个有线
 
     delete p_newItem;
     p_newItem = nullptr;
-    if (m_inactivatedLanListWidget->count() >= 4) {
-        m_inactivatedLanListWidget->setFixedWidth(400);
+    if (m_inactivatedLanListWidget->count() >= MAX_ITEMS) {
+        m_inactivatedLanListWidget->setFixedWidth(MAX_WIDTH);
     }
     return;
 }
@@ -760,7 +760,7 @@ void LanPage::initUI()
     m_activatedLanListWidget->setFrameShape(QFrame::Shape::NoFrame);
     m_activatedLanListWidget->setSpacing(LAN_LIST_SPACING);
     m_activatedLanListWidget->setFixedHeight(ITEM_HEIGHT);              //active区域固定高度,只显示一个条目
-    m_activatedLanListWidget->setFixedWidth(383);
+    m_activatedLanListWidget->setFixedWidth(MIN_WIDTH);
     m_activatedLanListWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     m_activatedNetLayout->addWidget(m_activatedLanListWidget);
 
@@ -844,8 +844,8 @@ void LanPage::updateActivatedConnectionArea(KyConnectItem *p_newItem)
         m_activeConnectionMap.insert(p_newItem->m_connectUuid, p_listWidgetItem);
         this->showDesktopNotify(tr("LAN Connected Successfully"));
     }
-    if (m_inactivatedLanListWidget->count() < 4) {
-        m_inactivatedLanListWidget->setFixedWidth(383);
+    if (m_inactivatedLanListWidget->count() < MAX_ITEMS) {
+        m_inactivatedLanListWidget->setFixedWidth(MIN_WIDTH);
     }
 
     return;
@@ -868,10 +868,10 @@ void LanPage::updateConnectionArea(KyConnectItem *p_newItem)
         m_inactiveConnectionMap.insert(p_newItem->m_connectUuid, p_listWidgetItem);
         this->showDesktopNotify(tr("LAN Disconnected Successfully"));
     }
-    if (m_inactivatedLanListWidget->count() < 4) {
-        m_inactivatedLanListWidget->setFixedWidth(383);
+    if (m_inactivatedLanListWidget->count() < MAX_ITEMS) {
+        m_inactivatedLanListWidget->setFixedWidth(MIN_WIDTH);
     } else {
-        m_inactivatedLanListWidget->setFixedWidth(400);
+        m_inactivatedLanListWidget->setFixedWidth(MAX_WIDTH);
     }
 
     return;
diff --git a/src/frontend/tab-pages/tabpage.h b/src/frontend/tab-pages/tabpage.h
index ee3b54d9..7be11d55 100644
--- a/src/frontend/tab-pages/tabpage.h
+++ b/src/frontend/tab-pages/tabpage.h
@@ -33,6 +33,10 @@
 #define INACTIVE_AREA_MIN_HEIGHT 170
 #define ACTIVE_AREA_MAX_HEIGHT 92
 
+#define MAX_ITEMS 4
+#define MAX_WIDTH 400
+#define MIN_WIDTH 383
+
 #define SCROLL_STEP 4
 
 enum KyDeviceType
diff --git a/src/frontend/tab-pages/wlanpage.cpp b/src/frontend/tab-pages/wlanpage.cpp
index 63069cd7..e9be8ef1 100644
--- a/src/frontend/tab-pages/wlanpage.cpp
+++ b/src/frontend/tab-pages/wlanpage.cpp
@@ -79,7 +79,7 @@ void WlanPage::initWlanUI()
     m_activatedNetListWidget->setContentsMargins(MAIN_LAYOUT_MARGINS);
     m_activatedNetListWidget->setSpacing(NET_LIST_SPACING);
     m_activatedNetListWidget->setFixedHeight(NORMAL_HEIGHT);
-    m_activatedNetListWidget->setFixedWidth(383);
+    m_activatedNetListWidget->setFixedWidth(MIN_WIDTH);
     m_activatedNetListWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     m_activatedNetLayout->addWidget(m_activatedNetListWidget);
 
@@ -383,8 +383,8 @@ void WlanPage::deleteWirelessItemFormMap(QMap<QString, QListWidgetItem*> &wirele
     delete p_listWidgetItem;
     p_listWidgetItem = nullptr;
 
-    if (m_inactivatedNetListWidget->count() < 4) {
-        m_inactivatedNetListWidget->setFixedWidth(383);
+    if (m_inactivatedNetListWidget->count() < MAX_ITEMS) {
+        m_inactivatedNetListWidget->setFixedWidth(MIN_WIDTH);
     }
     return;
 }
@@ -461,10 +461,10 @@ void WlanPage::constructWirelessNetArea()
 
     qDebug() << "[WlanPage] Stopped loading wireless net list! time="
              << QDateTime::currentDateTime().toString("hh:mm:ss.zzzz");
-    if (m_inactivatedNetListWidget->count() < 4) {
-        m_inactivatedNetListWidget->setFixedWidth(383);
+    if (m_inactivatedNetListWidget->count() < MAX_ITEMS) {
+        m_inactivatedNetListWidget->setFixedWidth(MIN_WIDTH);
     } else {
-        m_inactivatedNetListWidget->setFixedWidth(400);
+        m_inactivatedNetListWidget->setFixedWidth(MAX_WIDTH);
     }
     return;
 }
@@ -515,8 +515,8 @@ void WlanPage::onWlanAdded(QString interface, KyWirelessNetItem &item)
     updateWlanItemState(m_inactivatedNetListWidget, p_listWidgetItem, Deactivated);
 
     addWlanMoreItem();
-    if (m_inactivatedNetListWidget->count() >= 4) {
-        m_inactivatedNetListWidget->setFixedWidth(400);
+    if (m_inactivatedNetListWidget->count() >= MAX_ITEMS) {
+        m_inactivatedNetListWidget->setFixedWidth(MAX_WIDTH);
     }
     return;
 }
@@ -836,8 +836,8 @@ void WlanPage::updateActivatedArea(QString uuid, QString ssid, QString devName)
     m_activateConnectionItemMap.insert(wirelessNetItem.m_NetSsid, p_listWidgetItem);
 
     m_activatedNetListWidget->setFixedHeight(p_listWidgetItem->sizeHint().height());
-    if (m_inactivatedNetListWidget->count() < 4) {
-        m_inactivatedNetListWidget->setFixedWidth(383);
+    if (m_inactivatedNetListWidget->count() < MAX_ITEMS) {
+        m_inactivatedNetListWidget->setFixedWidth(MIN_WIDTH);
     }
     return;
 }
@@ -869,10 +869,10 @@ void WlanPage::updateWirelessNetArea(QString uuid, QString ssid, QString devName
 
     // 更新‘更多’条目，以保证其处于listwidget的最底部
     addWlanMoreItem();
-    if (m_inactivatedNetListWidget->count() < 4) {
-        m_inactivatedNetListWidget->setFixedWidth(383);
+    if (m_inactivatedNetListWidget->count() < MAX_ITEMS) {
+        m_inactivatedNetListWidget->setFixedWidth(MIN_WIDTH);
     } else {
-        m_inactivatedNetListWidget->setFixedWidth(400);
+        m_inactivatedNetListWidget->setFixedWidth(MAX_WIDTH);
     }
     return;
 }
diff --git a/src/frontend/tools/switchbutton.cpp b/src/frontend/tools/switchbutton.cpp
index 8806557e..532ea7db 100644
--- a/src/frontend/tools/switchbutton.cpp
+++ b/src/frontend/tools/switchbutton.cpp
@@ -128,8 +128,7 @@ void SwitchButton::leaveEvent(QEvent *event)
 {
     if (m_enabled && m_bIsOn) {
         m_colorActive = COLOR_ACTIVE;
-    }
-    else if (m_enabled && !m_bIsOn) {
+    } else if (m_enabled && !m_bIsOn) {
         m_colorInactive = COLOR_INACTIVE;
     }
     this->update();