diff --git a/frontend/src/components/Input-field.vue b/frontend/src/components/Input-field.vue
index 58151851..28077bac 100644
--- a/frontend/src/components/Input-field.vue
+++ b/frontend/src/components/Input-field.vue
@@ -121,6 +121,26 @@ const { t } = useI18n();
 const displayedKbs = computed(() => selectedKbs.value.slice(0, 2));
 const remainingCount = computed(() => Math.max(0, selectedKbs.value.length - 2));
 
+// 根据不同状态组合计算输入框的 placeholder
+const inputPlaceholder = computed(() => {
+  const hasKnowledge = allSelectedItems.value.length > 0;
+  const hasWebSearch = isWebSearchEnabled.value && isWebSearchConfigured.value;
+  
+  if (hasKnowledge && hasWebSearch) {
+    // 有知识库 + 有网络搜索
+    return t('input.placeholderKbAndWeb');
+  } else if (hasKnowledge) {
+    // 有知识库 + 无网络搜索
+    return t('input.placeholderWithContext');
+  } else if (hasWebSearch) {
+    // 无知识库 + 有网络搜索
+    return t('input.placeholderWebOnly');
+  } else {
+    // 无知识库 + 无网络搜索（纯模型对话）
+    return t('input.placeholder');
+  }
+});
+
 // 加载知识库列表
 const loadKnowledgeBases = async () => {
   try {
@@ -1185,7 +1205,7 @@ onBeforeRouteUpdate((to, from, next) => {
       <t-textarea 
         ref="textareaRef"
         v-model="query" 
-        :placeholder="allSelectedItems.length > 0 ? $t('input.placeholderWithContext') : $t('input.placeholder')" 
+        :placeholder="inputPlaceholder" 
         name="description" 
         :autosize="true" 
         @keydown="onKeydown" 
diff --git a/frontend/src/i18n/locales/en-US.ts b/frontend/src/i18n/locales/en-US.ts
index 5332e15d..bd65d8b4 100644
--- a/frontend/src/i18n/locales/en-US.ts
+++ b/frontend/src/i18n/locales/en-US.ts
@@ -748,8 +748,10 @@ export default {
   },
   input: {
     addModel: 'Add Model',
-    placeholder: 'Ask questions based on the knowledge base',
+    placeholder: 'Ask questions directly to the model',
     placeholderWithContext: 'Enter your question, will answer based on selected knowledge bases/files above',
+    placeholderWebOnly: 'Enter your question, will answer with web search',
+    placeholderKbAndWeb: 'Enter your question, will answer based on knowledge base and web search',
     agentMode: 'Agent Mode',
     normalMode: 'Normal Mode',
     normalModeDesc: 'Knowledge base RAG Q&A',
diff --git a/frontend/src/i18n/locales/ru-RU.ts b/frontend/src/i18n/locales/ru-RU.ts
index c478f53c..dd85b2d5 100644
--- a/frontend/src/i18n/locales/ru-RU.ts
+++ b/frontend/src/i18n/locales/ru-RU.ts
@@ -1671,8 +1671,10 @@ export default {
   },
   input: {
     addModel: 'Добавить модель',
-    placeholder: 'Задайте вопрос на основе базы знаний',
+    placeholder: 'Задайте вопрос напрямую модели',
     placeholderWithContext: 'Введите вопрос, ответ будет основан на выбранных выше базах знаний/файлах',
+    placeholderWebOnly: 'Введите вопрос, ответ будет основан на веб-поиске',
+    placeholderKbAndWeb: 'Введите вопрос, ответ будет основан на базе знаний и веб-поиске',
     agentMode: 'Agent режим',
     normalMode: 'Обычный режим',
     normalModeDesc: 'RAG-вопросы и ответы по базе знаний',
diff --git a/frontend/src/i18n/locales/zh-CN.ts b/frontend/src/i18n/locales/zh-CN.ts
index 633d881a..90c35e6d 100644
--- a/frontend/src/i18n/locales/zh-CN.ts
+++ b/frontend/src/i18n/locales/zh-CN.ts
@@ -1427,8 +1427,10 @@ export default {
   },
   input: {
     addModel: "添加模型",
-    placeholder: "基于知识库提问",
+    placeholder: "直接向模型提问",
     placeholderWithContext: "输入问题，将基于上方选中的知识库/文件回答",
+    placeholderWebOnly: "输入问题，将结合网络搜索回答",
+    placeholderKbAndWeb: "输入问题，将基于知识库和网络搜索回答",
     agentMode: "Agent 模式",
     normalMode: "普通模式",
     normalModeDesc: "基于知识库的 RAG 问答",
diff --git a/frontend/src/stores/menu.ts b/frontend/src/stores/menu.ts
index 67087ac3..731e0aa3 100644
--- a/frontend/src/stores/menu.ts
+++ b/frontend/src/stores/menu.ts
@@ -32,6 +32,7 @@ export const useMenuStore = defineStore('menuStore', () => {
 
   const isFirstSession = ref(false)
   const firstQuery = ref('')
+  const firstMentionedItems = ref<any[]>([])
 
   const applyMenuTranslations = () => {
     menuArr.forEach(item => {
@@ -90,14 +91,16 @@ export const useMenuStore = defineStore('menuStore', () => {
     isFirstSession.value = payload
   }
 
-  const changeFirstQuery = (payload: string) => {
+  const changeFirstQuery = (payload: string, mentionedItems: any[] = []) => {
     firstQuery.value = payload
+    firstMentionedItems.value = mentionedItems
   }
 
   return {
     menuArr,
     isFirstSession,
     firstQuery,
+    firstMentionedItems,
     clearMenuArr,
     updatemenuArr,
     updataMenuChildren,
diff --git a/frontend/src/views/chat/components/botmsg.vue b/frontend/src/views/chat/components/botmsg.vue
index 830f9f05..f40a6f8d 100644
--- a/frontend/src/views/chat/components/botmsg.vue
+++ b/frontend/src/views/chat/components/botmsg.vue
@@ -1,6 +1,23 @@
 <template>
     <div class="bot_msg">
         <div style="display: flex;flex-direction: column; gap:8px">
+            <!-- 显示@的知识库和文件（非 Agent 模式下显示） -->
+            <div v-if="!session.isAgentMode && mentionedItems && mentionedItems.length > 0" class="mentioned_items">
+                <span 
+                    v-for="item in mentionedItems" 
+                    :key="item.id" 
+                    class="mentioned_tag"
+                    :class="[
+                      item.type === 'kb' ? (item.kb_type === 'faq' ? 'faq-tag' : 'kb-tag') : 'file-tag'
+                    ]"
+                >
+                    <span class="tag_icon">
+                        <t-icon v-if="item.type === 'kb'" :name="item.kb_type === 'faq' ? 'chat-bubble-help' : 'folder'" />
+                        <t-icon v-else name="file" />
+                    </span>
+                    <span class="tag_name">{{ item.name }}</span>
+                </span>
+            </div>
             <docInfo :session="session"></docInfo>
             <AgentStreamDisplay :session="session" :user-query="userQuery" v-if="session.isAgentMode"></AgentStreamDisplay>
             <deepThink :deepSession="session" v-if="session.showThink && !session.isAgentMode"></deepThink>
@@ -75,6 +92,11 @@ const props = defineProps({
         required: false,
         default: ''
     },
+    mentionedItems: {
+        type: Array,
+        required: false,
+        default: () => []
+    },
     isFirstEnter: {
         type: Boolean,
         required: false
@@ -249,6 +271,75 @@ onBeforeUnmount(() => {
 <style lang="less" scoped>
 @import '../../../components/css/markdown.less';
 
+// @提及的知识库和文件标签样式
+.mentioned_items {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 6px;
+    justify-content: flex-start;
+    max-width: 100%;
+    margin-bottom: 2px;
+}
+
+.mentioned_tag {
+    display: inline-flex;
+    align-items: center;
+    gap: 4px;
+    padding: 4px 8px;
+    border-radius: 6px;
+    font-size: 12px;
+    font-weight: 500;
+    max-width: 200px;
+    cursor: default;
+    transition: all 0.15s;
+    background: var(--td-bg-color-secondarycontainer, #f3f3f3);
+    border: 1px solid transparent;
+    color: var(--td-text-color-primary, #333);
+    
+    /* KB - Document (Greenish tint) */
+    &.kb-tag {
+        background: rgba(16, 185, 129, 0.08);
+        color: #059669;
+        
+        .tag_icon {
+            color: #10b981;
+        }
+    }
+
+    /* KB - FAQ (Blueish tint) */
+    &.faq-tag {
+        background: rgba(0, 82, 217, 0.08);
+        color: #0052d9;
+        
+        .tag_icon {
+            color: #0052d9;
+        }
+    }
+    
+    /* File (Orange tint) */
+    &.file-tag {
+        background: rgba(237, 123, 47, 0.08);
+        color: #e65100;
+        
+        .tag_icon {
+            color: #ed7b2f;
+        }
+    }
+    
+    .tag_icon {
+        font-size: 14px;
+        display: flex;
+        align-items: center;
+    }
+    
+    .tag_name {
+        overflow: hidden;
+        text-overflow: ellipsis;
+        white-space: nowrap;
+        color: currentColor;
+    }
+}
+
 // 内容包装器 - 与 Agent 模式的 answer 样式一致
 .content-wrapper {
     background: #ffffff;
diff --git a/frontend/src/views/chat/index.vue b/frontend/src/views/chat/index.vue
index 3b187e16..6ffeee41 100644
--- a/frontend/src/views/chat/index.vue
+++ b/frontend/src/views/chat/index.vue
@@ -7,7 +7,7 @@
                         <usermsg :content="session.content" :mentioned_items="session.mentioned_items"></usermsg>
                     </div>
                     <div v-if="session.role == 'assistant'">
-                        <botmsg :content="session.content" :session="session" :user-query="getUserQuery(id)" @scroll-bottom="scrollToBottom"
+                        <botmsg :content="session.content" :session="session" :user-query="getUserQuery(id)" :mentioned-items="getUserMentionedItems(id)" @scroll-bottom="scrollToBottom"
                             :isFirstEnter="isFirstEnter"></botmsg>
                     </div>
                 </div>
@@ -61,7 +61,7 @@ const useSettingsStoreInstance = useSettingsStore();
 const uiStore = useUIStore();
 const { navigateToKnowledgeBaseList } = useKnowledgeBaseCreationNavigation();
 const { t } = useI18n();
-const { menuArr, isFirstSession, firstQuery } = storeToRefs(usemenuStore);
+const { menuArr, isFirstSession, firstQuery, firstMentionedItems } = storeToRefs(usemenuStore);
 const { output, onChunk, isStreaming, isLoading, error, startStream, stopStream } = useStream();
 const route = useRoute();
 const router = useRouter();
@@ -93,6 +93,18 @@ const getUserQuery = (index) => {
     }
     return '';
 };
+
+// 获取用户消息的 mentioned_items（用于 bot 消息显示）
+const getUserMentionedItems = (index) => {
+    if (index <= 0) {
+        return [];
+    }
+    const previous = messagesList[index - 1];
+    if (previous && previous.role === 'user') {
+        return previous.mentioned_items || [];
+    }
+    return [];
+};
 watch([() => route.params], (newvalue) => {
     isFirstEnter.value = true;
     if (newvalue[0].chatid) {
@@ -790,7 +802,7 @@ onMounted(async () => {
     checkmenuTitle(session_id.value)
     if (firstQuery.value) {
         scrollLock.value = true;
-        sendMsg(firstQuery.value);
+        sendMsg(firstQuery.value, '', firstMentionedItems.value || []);
         usemenuStore.changeFirstQuery('');
     } else {
         scrollLock.value = false;
diff --git a/frontend/src/views/creatChat/creatChat.vue b/frontend/src/views/creatChat/creatChat.vue
index e3a1f546..4fa855ea 100644
--- a/frontend/src/views/creatChat/creatChat.vue
+++ b/frontend/src/views/creatChat/creatChat.vue
@@ -39,11 +39,11 @@ const uiStore = useUIStore();
 const { t } = useI18n();
 const { navigateToKnowledgeBaseList } = useKnowledgeBaseCreationNavigation();
 
-const sendMsg = (value: string) => {
-    createNewSession(value);
+const sendMsg = (value: string, modelId: string, mentionedItems: any[]) => {
+    createNewSession(value, mentionedItems);
 }
 
-async function createNewSession(value: string) {
+async function createNewSession(value: string, mentionedItems: any[] = []) {
     const selectedKbs = settingsStore.settings.selectedKnowledgeBases || [];
     const selectedFiles = settingsStore.settings.selectedFiles || [];
 
@@ -63,7 +63,7 @@ async function createNewSession(value: string) {
     try {
         const res = await createSessions(sessionData);
         if (res.data && res.data.id) {
-            await navigateToSession(res.data.id, value);
+            await navigateToSession(res.data.id, value, mentionedItems);
         } else {
             console.error('[createChat] Failed to create session');
             MessagePlugin.error(t('createChat.messages.createFailed'));
@@ -74,7 +74,7 @@ async function createNewSession(value: string) {
     }
 }
 
-const navigateToSession = async (sessionId: string, value: string) => {
+const navigateToSession = async (sessionId: string, value: string, mentionedItems: any[]) => {
     const now = new Date().toISOString();
     let obj = { 
         title: t('createChat.newSessionTitle'), 
@@ -87,7 +87,7 @@ const navigateToSession = async (sessionId: string, value: string) => {
     };
     usemenuStore.updataMenuChildren(obj);
     usemenuStore.changeIsFirstSession(true);
-    usemenuStore.changeFirstQuery(value);
+    usemenuStore.changeFirstQuery(value, mentionedItems);
     router.push(`/platform/chat/${sessionId}`);
 }