diff --git a/src/backend/dbus-interface/kywirelessnetresource.cpp b/src/backend/dbus-interface/kywirelessnetresource.cpp
index 6d920703..66c1f9b2 100644
--- a/src/backend/dbus-interface/kywirelessnetresource.cpp
+++ b/src/backend/dbus-interface/kywirelessnetresource.cpp
@@ -516,5 +516,5 @@ void KyWirelessNetResource::onConnectionUpdate(QString uuid)
     }
     m_WifiNetworkList.clear();
     kyWirelessNetItemListInit();
-    emit wifiNetworkUpadte();
+    emit wifiNetworkUpdate();
 }
diff --git a/src/backend/dbus-interface/kywirelessnetresource.h b/src/backend/dbus-interface/kywirelessnetresource.h
index 62c0ed97..1da8b1bd 100644
--- a/src/backend/dbus-interface/kywirelessnetresource.h
+++ b/src/backend/dbus-interface/kywirelessnetresource.h
@@ -50,7 +50,7 @@ signals:
     void secuTypeChange(QString, QString, QString);
     void connectionRemove(QString, QString);
     void connectionAdd(QString, QString);
-    void wifiNetworkUpadte();
+    void wifiNetworkUpdate();
     void wifiNetworkAdd(QString, KyWirelessNetItem&);
     void wifiNetworkRemove(QString, QString);
 
diff --git a/src/frontend/list-items/wlanlistitem.cpp b/src/frontend/list-items/wlanlistitem.cpp
index 7af2bdba..910d1cf0 100644
--- a/src/frontend/list-items/wlanlistitem.cpp
+++ b/src/frontend/list-items/wlanlistitem.cpp
@@ -48,43 +48,51 @@ void WlanListItem::initWlanConnection()
 
 void WlanListItem::refreshIcon()
 {
+#define FULL_SIGNAL 5
+#define EXCELLENT_SIGNAL 4
+#define GOOD_SIGNAL 3
+#define OK_SIGNAL 2
+#define LOW_SIGNAL 1
+#define STEP 25
 //    if (m_data->m_state) //ZJP_TODO 连接中、已连接、未连接的处理，要单独写逻辑，后端接口待补全
     if (!m_hasPwd) {
         //ZJP_TODO 无加密 注意信号格数计算方式，可能需要修改
-        switch (m_data->m_signalStrength / 25 + 1) {
-        case 5:
-        case 4:
+        switch (m_data->m_signalStrength / STEP + 1) {
+        case FULL_SIGNAL:
+        case EXCELLENT_SIGNAL:
             m_netButton->setIcon(QIcon::fromTheme("network-wireless-signal-excellent-symbolic", QIcon(":/res/w/wifi-full.png")));
             break;
-        case 3:
+        case GOOD_SIGNAL:
             m_netButton->setIcon(QIcon::fromTheme("network-wireless-signal-good-symbolic", QIcon(":/res/w/wifi-high.png")));
             break;
-        case 2:
+        case OK_SIGNAL:
             m_netButton->setIcon(QIcon::fromTheme("network-wireless-signal-ok", QIcon(":/res/w/wifi-medium.png")));
             break;
-        case 1:
+        case LOW_SIGNAL:
             m_netButton->setIcon(QIcon::fromTheme("network-wireless-signal-low", QIcon(":/res/w/wifi-low.png")));
             break;
         default:
+            qDebug() << "Set wlan(without passwd) icon failed, signal = " << m_data->m_signalStrength << Q_FUNC_INFO << __LINE__;
             break;
         }
     } else {
         //ZJP_TODO 有加密
-        switch (m_data->m_signalStrength / 25 + 1) {
-        case 5:
-        case 4:
+        switch (m_data->m_signalStrength / STEP + 1) {
+        case FULL_SIGNAL:
+        case EXCELLENT_SIGNAL:
             m_netButton->setIcon(QIcon::fromTheme("network-wireless-signal-excellent-secure-symbolic", QIcon(":/res/w/wifi-full-pwd.png")));
             break;
-        case 3:
+        case GOOD_SIGNAL:
             m_netButton->setIcon(QIcon::fromTheme("network-wireless-signal-good-secure-symbolic", QIcon(":/res/w/wifi-high-pwd.png")));
             break;
-        case 2:
+        case OK_SIGNAL:
             m_netButton->setIcon(QIcon::fromTheme("network-wireless-signal-ok-secure-symbolic", QIcon(":/res/w/wifi-medium-pwd.png")));
             break;
-        case 1:
+        case LOW_SIGNAL:
             m_netButton->setIcon(QIcon::fromTheme("network-wireless-signal-low-secure-symbolic", QIcon(":/res/w/wifi-low-pwd.png")));
             break;
         default:
+            qDebug() << "Set wlan(with passwd) icon failed, signal = " << m_data->m_signalStrength << Q_FUNC_INFO << __LINE__;
             break;
         }
     }
diff --git a/src/frontend/nmdemo.cpp b/src/frontend/nmdemo.cpp
index 503137f8..1ad36969 100644
--- a/src/frontend/nmdemo.cpp
+++ b/src/frontend/nmdemo.cpp
@@ -158,7 +158,7 @@ void NmDemo::initConnect()
 
     connect(m_wnr, &KyWirelessNetResource::connectionRemove,   this ,&NmDemo::onConnectionRemove);
     connect(m_wnr, &KyWirelessNetResource::connectionAdd,   this ,&NmDemo::onConnectionAdd);
-    connect(m_wnr, &KyWirelessNetResource::wifiNetworkUpadte,   this ,&NmDemo::onWifiNetworkUpdate);
+    connect(m_wnr, &KyWirelessNetResource::wifiNetworkUpdate,   this ,&NmDemo::onWifiNetworkUpdate);
     connect(m_wnr, &KyWirelessNetResource::wifiNetworkAdd,   this ,&NmDemo::onWifiNetworkAdd);
     connect(m_wnr, &KyWirelessNetResource::wifiNetworkRemove,   this ,&NmDemo::onWifiNetworkRemove);
 
diff --git a/src/frontend/tab-pages/wlanpage.cpp b/src/frontend/tab-pages/wlanpage.cpp
index 6945a775..126f444a 100644
--- a/src/frontend/tab-pages/wlanpage.cpp
+++ b/src/frontend/tab-pages/wlanpage.cpp
@@ -72,7 +72,7 @@ void WlanPage::initConnections()
 {
     connect(m_resource, &KyWirelessNetResource::wifiNetworkAdd, this, &WlanPage::onWlanAdded);
     connect(m_resource, &KyWirelessNetResource::wifiNetworkRemove, this, &WlanPage::onWlanRemoved);
-    connect(m_resource, &KyWirelessNetResource::wifiNetworkUpadte, this, &WlanPage::onWlanUpdated);
+    connect(m_resource, &KyWirelessNetResource::wifiNetworkUpdate, this, &WlanPage::onWlanUpdated);
 }
 
 /**
@@ -130,7 +130,9 @@ void WlanPage::getAllWlan()
     }
     int height = 0;
     foreach (auto itemData, wlanList) {
-        if (itemData.m_NetSsid == this->m_activatedWlanSSid) { continue; }
+        if (itemData.m_NetSsid == this->m_activatedWlanSSid) {
+            continue;
+        }
 
         KyWirelessNetItem *data = new KyWirelessNetItem(itemData);
         WlanListItem *wlanItemWidget = new WlanListItem(m_resource, data);
@@ -139,7 +141,9 @@ void WlanPage::getAllWlan()
         wlanItem->setSizeHint(QSize(m_inactivatedNetListWidget->width(), wlanItemWidget->height()));
         m_inactivatedNetListWidget->addItem(wlanItem);
         m_inactivatedNetListWidget->setItemWidget(wlanItem, wlanItemWidget);
-        if (height == 0) height += wlanItemWidget->height();
+        if (height == 0) {
+            height += wlanItemWidget->height();
+        }
         height += wlanItemWidget->height() + NET_LIST_SPACING;
     }
     m_inactivatedNetListWidget->setFixedHeight(height);