diff --git a/public/images/avatar/default_assistant.png b/public/images/avatar/default_assistant.png
new file mode 100644
index 000000000..3407659f2
Binary files /dev/null and b/public/images/avatar/default_assistant.png differ
diff --git a/resources/assets/js/components/UserAvatar/index.vue b/resources/assets/js/components/UserAvatar/index.vue
index c1644415e..6c2658f17 100755
--- a/resources/assets/js/components/UserAvatar/index.vue
+++ b/resources/assets/js/components/UserAvatar/index.vue
@@ -151,6 +151,11 @@ export default {
             if (!this.$store.state.userId) {
                 return;
             }
+            // AI 助手虚拟用户
+            if (this.userid === -1) {
+                this.setUser({userid: -1, nickname: this.$L('AI 助手'), bot: false, userimg: $A.mainUrl('images/avatar/default_assistant.png'), online: false});
+                return;
+            }
             const tempUser = this.$store.state.cacheUserBasic.find(({userid}) => userid == this.userid);
             if (tempUser) {
                 this.setUser(tempUser);
diff --git a/resources/assets/js/pages/manage/components/ChatInput/index.vue b/resources/assets/js/pages/manage/components/ChatInput/index.vue
index da6936b49..566f2afb1 100755
--- a/resources/assets/js/pages/manage/components/ChatInput/index.vue
+++ b/resources/assets/js/pages/manage/components/ChatInput/index.vue
@@ -2259,6 +2259,7 @@ export default {
                 this.quoteUpdate ||                         // 修改消息
                 !this.quoteData ||                          // 无引用消息
                 !this.replyMsgAutoMention ||                // 不自动@
+                userData.userid === -1 ||                   // AI 助手
                 this.userId === userData.userid ||          // 自己
                 this.quoteData.userid !== userData.userid   // 不同人
             ) {
diff --git a/resources/assets/js/pages/manage/components/DialogView/index.vue b/resources/assets/js/pages/manage/components/DialogView/index.vue
index 06c7be24b..f0d6ba200 100644
--- a/resources/assets/js/pages/manage/components/DialogView/index.vue
+++ b/resources/assets/js/pages/manage/components/DialogView/index.vue
@@ -2,9 +2,7 @@
     <div class="dialog-view" :class="viewClass" :data-id="msgData.id">
         <!--昵称-->
         <div v-if="dialogType === 'group'" class="dialog-username" @pointerdown="handleOperation($event, 'mention')">
-            <!-- AI 助手只显示名称 -->
-            <span v-if="msgData.userid === -1" class="ai-assistant-name">{{ $L('AI 助手') }}</span>
-            <UserAvatar v-else :userid="msgData.userid" :show-icon="false" :show-name="true" click-open-detail/>
+            <UserAvatar :userid="msgData.userid" :show-icon="false" :show-name="true" :click-open-detail="msgData.userid !== -1"/>
         </div>
 
         <div
@@ -20,7 +18,7 @@
                 <div class="reply-desc" v-html="$A.getMsgSimpleDesc(msgData.msg.reply_data, 'image-preview')"></div>
             </div>
             <!--转发-->
-            <div v-if="!hideForward && msgData.forward_id && showForwardData(msgData.msg.forward_data)" class="dialog-reply no-dark-content" @click="openDialog(msgData.msg.forward_data.userid)">
+            <div v-if="!hideForward && msgData.forward_id && showForwardData(msgData.msg.forward_data)" class="dialog-reply no-dark-content" @click="msgData.msg.forward_data.userid !== -1 && openDialog(msgData.msg.forward_data.userid)">
                 <div class="reply-avatar">
                     <UserAvatar :userid="msgData.msg.forward_data.userid" :show-icon="false" :show-name="true"/>
                 </div>
diff --git a/resources/assets/js/pages/manage/components/DialogWrapper.vue b/resources/assets/js/pages/manage/components/DialogWrapper.vue
index fe56920d3..546e84bb5 100644
--- a/resources/assets/js/pages/manage/components/DialogWrapper.vue
+++ b/resources/assets/js/pages/manage/components/DialogWrapper.vue
@@ -3237,6 +3237,10 @@ export default {
             switch (type) {
                 // 长按触发提及
                 case "mention":
+                    if (data.userid === -1) {
+                        // AI 助手不支持@提及
+                        break;
+                    }
                     const user = this.cacheUserBasic.find(({userid}) => userid == data.userid);
                     if (user) {
                         this.$refs.input?.addMention({
diff --git a/resources/assets/js/store/actions.js b/resources/assets/js/store/actions.js
index 390429ef4..ef91bd062 100644
--- a/resources/assets/js/store/actions.js
+++ b/resources/assets/js/store/actions.js
@@ -645,7 +645,7 @@ export default {
         dispatch("dialogMsgRead");
         dispatch("updateMicroAppsStatus");
         //
-        const allIds = Object.values(state.userAvatar).map(({userid}) => userid);
+        const allIds = Object.values(state.userAvatar).map(({userid}) => userid).filter(id => id > 0);
         [...new Set(allIds)].some(userid => dispatch("getUserBasic", {userid}))
     },
 
diff --git a/resources/assets/statics/public/images/avatar/default_assistant.png b/resources/assets/statics/public/images/avatar/default_assistant.png
new file mode 100644
index 000000000..3407659f2
Binary files /dev/null and b/resources/assets/statics/public/images/avatar/default_assistant.png differ