diff --git a/src/views/abnormalAlarm/components/searchBar.vue b/src/views/abnormalAlarm/components/searchBar.vue
index 24dc5b6..58c5494 100644
--- a/src/views/abnormalAlarm/components/searchBar.vue
+++ b/src/views/abnormalAlarm/components/searchBar.vue
@@ -12,6 +12,7 @@
             :maxTagCount="1" 
             :options="typeOptions" 
             show-arrow 
+            allowClear
             @change="onTypeChange"
           >
             <img slot="suffixIcon" src="@/assets/images/global/select-down.png" alt="" />
@@ -36,6 +37,7 @@
             placeholder="select..."
             :maxTagCount="1" 
             show-arrow 
+            allowClear
             :options="options" 
             @change="onNameChange"
           >
@@ -62,6 +64,7 @@
             :maxTagCount="1" 
             :filter-option="filterOption"
             show-arrow 
+            allowClear
             :options="options" 
             @change="onStationChange"
           >
@@ -87,6 +90,7 @@
             placeholder="select..."
             :maxTagCount="1" 
             show-arrow 
+            allowClear
             :options="sourceOptions" 
             @change="onSourceChange"
           >
diff --git a/src/views/abnormalAlarm/databaseMonitor/instances/conditionBox.vue b/src/views/abnormalAlarm/databaseMonitor/instances/conditionBox.vue
index 835d5db..32c1652 100644
--- a/src/views/abnormalAlarm/databaseMonitor/instances/conditionBox.vue
+++ b/src/views/abnormalAlarm/databaseMonitor/instances/conditionBox.vue
@@ -8,6 +8,7 @@
             placeholder="select..."
             :filter-option="filterOption"
             show-arrow 
+            allowClear
             :options="DbOptions" 
             @change="onDbChange"
           >
@@ -20,6 +21,7 @@
             v-model="queryParams.timer" 
             placeholder="select..."
             show-arrow 
+            allowClear
             :options="timerOptions" 
             @change="onTimeChange"
           >
diff --git a/src/views/abnormalAlarm/emailMonitor/instances/index.vue b/src/views/abnormalAlarm/emailMonitor/instances/index.vue
index 56ee8d8..c265de4 100644
--- a/src/views/abnormalAlarm/emailMonitor/instances/index.vue
+++ b/src/views/abnormalAlarm/emailMonitor/instances/index.vue
@@ -11,6 +11,7 @@
                 placeholder="select..."
                 :filter-option="filterOption"
                 show-arrow 
+                allowClear
                 :options="emailOptions" 
                 @change="onEmailChange"
               >
@@ -108,6 +109,7 @@
                 v-model="date" 
                 placeholder="select..."
                 show-arrow 
+                allowClear
                 :options="dateOptions" 
                 @change="onDateChange"
               >
diff --git a/src/views/abnormalAlarm/emailMonitor/overview/index.vue b/src/views/abnormalAlarm/emailMonitor/overview/index.vue
index 632a8af..681301c 100644
--- a/src/views/abnormalAlarm/emailMonitor/overview/index.vue
+++ b/src/views/abnormalAlarm/emailMonitor/overview/index.vue
@@ -151,6 +151,7 @@
       </a-form-item>
       <a-form-item label="Enable or not">
         <a-select 
+          allowClear
           v-decorator="[
             'enabled', 
             { 
@@ -159,6 +160,7 @@
             }
           ]"
         >
+          <img slot="suffixIcon" src="@/assets/images/global/select-down.png" alt="" />
           <a-select-option :value="1">
             Enable
           </a-select-option>
diff --git a/src/views/abnormalAlarm/serverMonitor/instances/cpu.vue b/src/views/abnormalAlarm/serverMonitor/instances/cpu.vue
index f3ef1bd..9da0171 100644
--- a/src/views/abnormalAlarm/serverMonitor/instances/cpu.vue
+++ b/src/views/abnormalAlarm/serverMonitor/instances/cpu.vue
@@ -9,6 +9,7 @@
             placeholder="select..."
             :filter-option="filterOption"
             show-arrow 
+            allowClear
             labelInValue
             :options="serverOptions" 
             @change="onServerChange"
@@ -22,6 +23,7 @@
             v-model="queryParams.timer" 
             placeholder="select..."
             show-arrow 
+            allowClear
             :options="timerOptions" 
             @change="onTimeChange"
           >
diff --git a/src/views/abnormalAlarm/serverMonitor/instances/monitor.vue b/src/views/abnormalAlarm/serverMonitor/instances/monitor.vue
index da66926..0d2bf18 100644
--- a/src/views/abnormalAlarm/serverMonitor/instances/monitor.vue
+++ b/src/views/abnormalAlarm/serverMonitor/instances/monitor.vue
@@ -9,6 +9,7 @@
             placeholder="select..."
             :filter-option="filterOption"
             show-arrow 
+            allowClear
             labelInValue
             :options="serverOptions" 
             @change="onServerChange"
@@ -22,6 +23,7 @@
             v-model="queryParams.timer" 
             placeholder="select..."
             show-arrow 
+            allowClear
             :options="timerOptions" 
             @change="onTimeChange"
           >
diff --git a/src/views/abnormalAlarm/serverMonitor/instances/serviceProcess.vue b/src/views/abnormalAlarm/serverMonitor/instances/serviceProcess.vue
index 7526b3a..c81e8c5 100644
--- a/src/views/abnormalAlarm/serverMonitor/instances/serviceProcess.vue
+++ b/src/views/abnormalAlarm/serverMonitor/instances/serviceProcess.vue
@@ -9,6 +9,7 @@
             placeholder="select..."
             :filter-option="filterOption"
             show-arrow 
+            allowClear
             :options="serverOptions" 
             @change="onServerChange"
           >
@@ -21,6 +22,7 @@
             v-model="queryParams.timer" 
             placeholder="select..."
             show-arrow 
+            allowClear
             :options="timerOptions" 
             @change="onTimeChange"
           >