diff --git a/docs/notification.md b/docs/notification.md
index 2aaaa6e..cff2d32 100644
--- a/docs/notification.md
+++ b/docs/notification.md
@@ -28,6 +28,6 @@ import { Notification } from 'vue-desktop'
 
 - title: Notification 显示的标题。
 - message: Notification 显示的内容。
-- type: Notification 显示的图标的类型，可选值：success、info、warning、error，默认值为info。
-- duration: Notification 显示的时长，单位为秒，默认值为5。
+- type: Notification 显示的图标的类型，可选值：success、info、warning、error，默认值为 info。
+- duration: Notification 显示的时长，单位为秒，默认值为 5。设置为 0 则会一直显示，直到用户手动关闭。
 - callback: Notification 关闭后的回调函数，参数 instance 为对应于该 Notification 的 Vue 实例对象，它具有上述四个属性，instance.id 为唯一性标识。
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diff --git a/examples/service/notification.vue b/examples/service/notification.vue
index ebeefad..4f0bfec 100644
--- a/examples/service/notification.vue
+++ b/examples/service/notification.vue
@@ -27,7 +27,7 @@
           title: '通知',
           message: '通知信息',
           type: 'warning',
-          duration: 2
+          duration: 0
         });
       },
       notification4() {
diff --git a/src/service/notification.vue b/src/service/notification.vue
index 010ddd5..cac6963 100644
--- a/src/service/notification.vue
+++ b/src/service/notification.vue
@@ -138,21 +138,25 @@
 
       startTimer() {
         var self = this;
+        if (this.duration > 0) {
+          this.timer = setTimeout(function() {
+            if (!self.closed) {
+              self.handleClose();
+            }
+          }, this.duration * 1000);
+        }
+      }
+    },
+
+    ready() {
+      var self = this;
+      if (this.duration > 0) {
         this.timer = setTimeout(function() {
           if (!self.closed) {
             self.handleClose();
           }
         }, this.duration * 1000);
       }
-    },
-
-    ready() {
-      var self = this;
-      this.timer = setTimeout(function() {
-        if (!self.closed) {
-          self.handleClose();
-        }
-      }, this.duration * 1000);
     }
   }
 </script>
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