diff --git a/src/components/Tools/HeaderComment.vue b/src/components/Tools/HeaderComment.vue
index 8c165c38..280a01c9 100644
--- a/src/components/Tools/HeaderComment.vue
+++ b/src/components/Tools/HeaderComment.vue
@@ -15,12 +15,7 @@
             <a-list :loading="postCommentsLoading" :dataSource="converttedPostComments">
               <a-list-item slot="renderItem" slot-scope="item">
                 <a-list-item-meta>
-                  <a-avatar
-                    class="bg-white"
-                    slot="avatar"
-                    :src="'//cn.gravatar.com/avatar/' + item.gravatarMd5 + '&d=mm'"
-                    size="large"
-                  />
+                  <a-avatar class="bg-white" slot="avatar" :src="item.avatar" size="large" />
                   <template slot="title">
                     <a :href="item.authorUrl" target="_blank">{{ item.author }}</a
                     >：<span v-html="item.content"></span>
@@ -36,12 +31,7 @@
             <a-list :loading="sheetCommentsLoading" :dataSource="converttedSheetComments">
               <a-list-item slot="renderItem" slot-scope="item">
                 <a-list-item-meta>
-                  <a-avatar
-                    class="bg-white"
-                    slot="avatar"
-                    :src="'//cn.gravatar.com/avatar/' + item.gravatarMd5 + '&d=mm'"
-                    size="large"
-                  />
+                  <a-avatar class="bg-white" slot="avatar" :src="item.avatar" size="large" />
                   <template slot="title">
                     <a :href="item.authorUrl" target="_blank">{{ item.author }}</a
                     >：<span v-html="item.content"></span>
diff --git a/src/views/comment/components/CommentTab.vue b/src/views/comment/components/CommentTab.vue
index a8ff5cde..28daa256 100644
--- a/src/views/comment/components/CommentTab.vue
+++ b/src/views/comment/components/CommentTab.vue
@@ -126,7 +126,7 @@
                 <a v-if="type === 'posts'" :href="item.post.fullPath" target="_blank">《{{ item.post.title }}》</a>
                 <a v-if="type === 'sheets'" :href="item.sheet.fullPath" target="_blank">《{{ item.sheet.title }}》</a>
               </template>
-              <a-avatar slot="avatar" size="large" :src="'//cn.gravatar.com/avatar/' + item.gravatarMd5 + '&d=mm'" />
+              <a-avatar slot="avatar" size="large" :src="item.avatar" />
               <span
                 slot="title"
                 style="max-width: 300px;display: block;white-space: nowrap;overflow: hidden;text-overflow: ellipsis;"
diff --git a/src/views/comment/components/TargetCommentTree.vue b/src/views/comment/components/TargetCommentTree.vue
index dd7a80a7..00848c8f 100644
--- a/src/views/comment/components/TargetCommentTree.vue
+++ b/src/views/comment/components/TargetCommentTree.vue
@@ -44,7 +44,7 @@
         <a-icon type="user" v-if="comment.isAdmin" style="margin-right: 3px;" />
         {{ comment.author }}
       </a>
-      <a-avatar size="large" slot="avatar" :src="avatar" :alt="comment.author" />
+      <a-avatar size="large" slot="avatar" :src="comment.avatar" :alt="comment.author" />
       <p slot="content" v-html="content"></p>
       <a-tooltip slot="datetime">
         <span slot="title">{{ comment.createTime | moment }}</span>
@@ -78,9 +78,6 @@ export default {
     }
   },
   computed: {
-    avatar() {
-      return `//cn.gravatar.com/avatar/${this.comment.gravatarMd5}/?s=256&d=mp`
-    },
     content() {
       return marked(this.comment.content)
     }
diff --git a/src/views/dashboard/components/RecentCommentTab.vue b/src/views/dashboard/components/RecentCommentTab.vue
index fdc4974b..c919fce6 100644
--- a/src/views/dashboard/components/RecentCommentTab.vue
+++ b/src/views/dashboard/components/RecentCommentTab.vue
@@ -1,7 +1,7 @@
 <template>
   <a-list itemLayout="horizontal" :dataSource="formmatedCommentData" :loading="loading">
     <a-list-item slot="renderItem" slot-scope="item, index" :key="index">
-      <a-comment :avatar="'//cn.gravatar.com/avatar/' + item.gravatarMd5 + '/?s=256&d=mp'">
+      <a-comment :avatar="item.avatar">
         <template slot="author" v-if="type === 'posts'">
           <a :href="item.authorUrl" target="_blank">{{ item.author }}</a> 发表在 《<a
             v-if="item.post.status == 'PUBLISHED' || item.post.status == 'INTIMATE'"
diff --git a/src/views/system/optiontabs/CommentTab.vue b/src/views/system/optiontabs/CommentTab.vue
index 626a088b..43630047 100644
--- a/src/views/system/optiontabs/CommentTab.vue
+++ b/src/views/system/optiontabs/CommentTab.vue
@@ -24,13 +24,11 @@
       <a-form-model-item label="API 评论开关：" help="* 关闭之后将无法进行评论">
         <a-switch v-model="options.comment_api_enabled" />
       </a-form-model-item>
-      <a-form-model-item label="评论模块 JS：">
-        <a-input
-          type="textarea"
-          :autoSize="{ minRows: 2 }"
-          v-model="options.comment_internal_plugin_js"
-          placeholder="该设置仅对内置的评论模块有效"
-        />
+      <a-form-model-item label="评论模块 JS：" help="* 该设置需要主题支持">
+        <a-input type="textarea" :autoSize="{ minRows: 2 }" v-model="options.comment_internal_plugin_js" />
+      </a-form-model-item>
+      <a-form-model-item label="Gravatar 镜像源：" help="* 例如：//gravatar.com/avatar/">
+        <a-input v-model="options.gravatar_source" />
       </a-form-model-item>
       <a-form-model-item label="每页显示条数： ">
         <a-input-number v-model="options.comment_page_size" :min="1" style="width:100%" />