diff --git a/packages/components/alert/src/index.vue b/packages/components/alert/src/index.vue
index 619bc245c7..b13e66d703 100644
--- a/packages/components/alert/src/index.vue
+++ b/packages/components/alert/src/index.vue
@@ -19,7 +19,7 @@
         >
           <slot name="title">{{ title }}</slot>
         </span>
-        <p v-if="$slots.default || !!description" class="el-alert__description">
+        <p v-if="$slots.default || description" class="el-alert__description">
           <slot>
             {{ description }}
           </slot>