diff --git a/source/alarmEventMainDialog.cpp b/source/alarmEventMainDialog.cpp
index 1d56c9c..8ac8bd7 100644
--- a/source/alarmEventMainDialog.cpp
+++ b/source/alarmEventMainDialog.cpp
@@ -118,6 +118,9 @@ void AlarmEventMainDialog::onSyncDataStatus(const PaginationInfo& paginationInfo
 
 void AlarmEventMainDialog::onLoadDataError(const QString& error)
 {
+    if(!this->isVisible())
+        return;
+
     showTransparentMask();
     showMessageDialog(type_warning, QString("错误"), QString("加载数据失败(%1)").arg(error));
 }
diff --git a/ui/alarmEventMainDialog.ui b/ui/alarmEventMainDialog.ui
index 93980ad..4045e10 100644
--- a/ui/alarmEventMainDialog.ui
+++ b/ui/alarmEventMainDialog.ui
@@ -123,17 +123,25 @@ border-image: url(:/images/down-arrow.png);
 }
 QComboBox QAbstractItemView
 {
+font: 11pt "黑体";
+color: rgb(230, 230, 230);
+background-color:rgb(35,35,35);
 outline: 0px; /*去除选中虚线框 */
 border:0px;
-background-color:rgba(25,25,25,220);
+}
+QComboBox QAbstractItemView::item
+{
+padding-top: 2px;
+padding-bottom:2px;
 }
 QComboBox QAbstractItemView::item:hover
 {
+padding-top: 2px;
+padding-bottom:2px;
 background-color: rgb(43, 102, 158);
 }
 QComboBox QAbstractItemView::item:selected
 {
-color: rgb(250, 250, 250);
 background-color: rgba(43, 102, 158, 80);
 }</string>
   </property>