diff --git a/common/js/ai-service.js b/common/js/ai-service.js
index 3328545..40d0cae 100644
--- a/common/js/ai-service.js
+++ b/common/js/ai-service.js
@@ -1,6 +1,7 @@
 import Config from './config.js'
 import http from './http.js'
 import store from '@/store/index.js'
+import lang from './lang.js'
 
 let currentConversationId = null;
 export const CONVERSATION_KEY = 'ai_conversation_id';
@@ -524,6 +525,34 @@ export default {
     }
   },
 
+  /**
+   * 获取服务配置信息
+   */
+  async getServiceConfig() {
+    try {
+      const params = {
+        url: '/api/kefu/info',
+        data: {
+          uniacid: this.getUniacid(),
+          token: store.state.token || 'test_token',
+          user_id: getUserId(),
+          member_id: getUserId(),
+          locale: lang.getCurrentLocale()
+        },
+        header: {
+          'Content-Type': 'application/json'
+        }
+      };      
+      const response = await http.sendRequest({
+        ...params,
+        async: false,
+      });
+      return response.data;
+    } catch (error) {
+      return null;
+    }
+  },
+
   /**
    * 清除会话历史（调用后端接口）
    */
diff --git a/pages_tool/ai-chat/ai-chat-message.vue b/pages_tool/ai-chat/ai-chat-message.vue
index a62a8ce..7b227eb 100644
--- a/pages_tool/ai-chat/ai-chat-message.vue
+++ b/pages_tool/ai-chat/ai-chat-message.vue
@@ -1,5 +1,10 @@
 <template>
   <view class="ai-chat-container" :style="aiChatContainerStyle">
+    <!-- 搜索入口按钮（浮动在消息区右上角） -->
+    <view class="search-entrance" v-if="!showSearchBar" @click="toggleSearch">
+      <text class="search-entrance-icon">🔍</text>
+    </view>
+    
     <!-- 聊天消息列表 - 统一使用 scroll-into-view -->
     <scroll-view 
       class="chat-messages" 
@@ -45,7 +50,8 @@
               @touchmove="onBubbleTouchMove"
               @touchend="onBubbleTouchEnd"
               @touchcancel="onBubbleTouchEnd">
-              <text class="message-text" selectable>{{ message.content }}</text>
+              <rich-text v-if="searchKeyword" :nodes="highlightContent(message.content)" class="message-rich-text" />
+              <text v-else class="message-text" selectable>{{ message.content }}</text>
             </view>
                       </view>
         </view>
@@ -76,17 +82,17 @@
               @touchcancel="onBubbleTouchEnd">
               <!-- 文本消息 -->
               <view v-if="message.type === 'text'" class="text-content">
-                <rich-text :nodes="parseMarkdown(message.content)" />
+                <rich-text :nodes="getAIDisplayContent(message.content)" />
               </view>
               
               <!-- Markdown文档 -->
               <view v-else-if="message.type === 'markdown'" class="markdown-content">
                 <view class="markdown-header">
                   <text class="iconfont icon-markdown"></text>
-                  <text class="markdown-title">文档内容</text>
+                  <text class="markdown-title"></text>
                 </view>
                 <view class="markdown-body">
-                  <rich-text :nodes="parseMarkdown(message.content)" />
+                  <rich-text :nodes="getAIDisplayContent(message.content)" />
                 </view>
               </view>
               
@@ -206,6 +212,27 @@
       </view>
     </scroll-view>
     
+    <!-- 搜索浮条（消息区和输入框之间，靠近操作位置） -->
+    <view class="search-bar" v-if="showSearchBar">
+      <text class="search-bar-close" @click="closeSearch">✕</text>
+      <view class="search-bar-input-wrap">
+        <text class="search-bar-icon">🔍</text>
+        <input 
+          class="search-bar-input" 
+          v-model="searchKeyword" 
+          placeholder="搜索聊天记录"
+          :focus="true"
+          @input="onSearchInput"
+          @confirm="doSearch" />
+      </view>
+      <view class="search-bar-actions" v-if="searchResults.length > 0">
+        <text class="search-bar-count">{{ searchResultIndex + 1 }}/{{ searchResults.length }}</text>
+        <text class="search-bar-nav" @click="scrollToPrevResult">↑</text>
+        <text class="search-bar-nav" @click="scrollToNextResult">↓</text>
+      </view>
+      <text class="search-bar-clear" v-if="searchKeyword" @click.stop="clearSearch">清空</text>
+    </view>
+    
     <!-- 输入区域 -->
     <view class="input-area" :style="inputAreaStyle">
       <view class="input-tools">
@@ -476,6 +503,11 @@ export default {
     streamSpeed: {
       type: Number,
       default: 20
+    },
+    // API 获取欢迎语失败时的降级欢迎语
+    fallbackWelcome: {
+      type: String,
+      default: ''
     }
   },
   data(){
@@ -526,7 +558,13 @@ export default {
 
     // 手动长按检测相关（touch 计时器）
     _longPressTimer: null,
-    _longPressMessage: null
+    _longPressMessage: null,
+
+    // 聊天记录搜索
+    showSearchBar: false,
+    searchKeyword: '',
+    searchResults: [],
+    searchResultIndex: -1
     }
   },
   computed: {
@@ -540,7 +578,7 @@ export default {
       return this.$util.img(IMAGE_CONFIG.aiAvatar);
     },
     chatMessagesStyle() {
-      // 键盘弹出时增加底部padding，避免消息内容被键盘遮挡
+      // 键盘弹出时增加底部padding
       return {
         'padding-bottom': this.keyboardHeight > 0 ? this.keyboardHeight + 'px' : '0px'
       };
@@ -579,8 +617,11 @@ export default {
       this.initUserNicknameData()
   	this.currentConversationId = aiService.getConversationId();
   	console.log('[AI Chat] created, currentConversationId:', this.currentConversationId, 'messages.length:', this.messages.length);
+
+      // 异步获取服务配置（含欢迎语）
+      this._loadWelcomeMessage()
     },
-     mounted() {
+    mounted() {
         // 初始加载时滚底（仅一次）
         this.$nextTick(() => {
           this.scrollToBottom()
@@ -627,6 +668,65 @@ export default {
         console.log('[AI Chat] → 分支4: 跳过加载，保留当前消息, messages.length:', this.messages.length);
       }
     },
+
+    // 加载欢迎语：优先 API，API 失败或禁用时用父页面传入的 fallbackWelcome
+    async _loadWelcomeMessage() {
+      // 仅全新会话才需要欢迎语
+      if (this.currentConversationId) {
+        console.log('[AI Chat] 已有会话，跳过欢迎语')
+        return
+      }
+
+      let welcomeText = ''
+      let isMarkdown = false
+      let welcomeLoaded = false
+
+      // 1. 尝试从 API 获取远程欢迎语
+      try {
+        const config = await aiService.getServiceConfig()
+        if (config) {
+          const welcomeInfo = config.welcome
+          const remoteText = welcomeInfo?.welcome || ''
+          const isEnabled = welcomeInfo?.is_enabled
+          if (remoteText && isEnabled !== 0 && isEnabled !== false) {
+            welcomeText = remoteText
+            isMarkdown = true
+            welcomeLoaded = true
+            console.log('[AI Chat] 使用远程欢迎语:', welcomeText.substring(0, 50))
+          }
+        }
+      } catch (e) {
+        console.warn('[AI Chat] 获取服务配置失败:', e)
+      }
+
+      // 2. API 未返回有效欢迎语时，使用降级方案
+      if (!welcomeLoaded) {
+        welcomeText = this.fallbackWelcome
+        isMarkdown = false
+        if (welcomeText) {
+          console.log('[AI Chat] 使用降级欢迎语')
+        } else {
+          console.log('[AI Chat] 无可用欢迎语')
+          return
+        }
+      }
+
+      // 3. 插入欢迎语（再次检查是否仍是全新会话）
+      if (!this.currentConversationId && this.messages.length === 0) {
+        const welcomeMsg = {
+          id: ++this.messageId,
+          role: 'ai',
+          type: isMarkdown ? 'markdown' : 'text',
+          content: welcomeText,
+          timestamp: Date.now(),
+          actions: []
+        }
+        this.messages.push(welcomeMsg)
+        this.$nextTick(() => this.scrollToBottom())
+        this.$emit('ai-response', welcomeMsg)
+      }
+    },
+
     // 生成消息的唯一 key（兼容非 H5 平台）
     getMessageKey(message, index) {
       const id = message.id || message.timestamp || index;
@@ -1889,6 +1989,154 @@ _handleStreamError(msg) {
       }
     },
 
+    // ========================================
+    // 聊天记录搜索
+    // ========================================
+
+    // 切换搜索条
+    toggleSearch() {
+      this.showSearchBar = !this.showSearchBar
+      if (!this.showSearchBar) {
+        this.clearSearch()
+      }
+    },
+
+    // 关闭搜索
+    closeSearch() {
+      this.showSearchBar = false
+      this.clearSearch()
+    },
+
+    // 清空搜索状态
+    clearSearch() {
+      this.searchKeyword = ''
+      this.searchResults = []
+      this.searchResultIndex = -1
+    },
+
+    // 输入时实时搜索
+    onSearchInput(e) {
+      const val = e.detail ? e.detail.value : e
+      if (val) {
+        this.searchKeyword = val
+        this.doSearch()
+      } else {
+        this.clearSearch()
+      }
+    },
+
+    // 执行搜索
+    doSearch() {
+      const keyword = this.searchKeyword.trim().toLowerCase()
+      if (!keyword) {
+        this.searchResults = []
+        this.searchResultIndex = -1
+        return
+      }
+
+      const results = []
+      this.messages.forEach((msg, index) => {
+        if (msg.type === 'loading') return
+        const content = (msg.content || '').toLowerCase()
+        if (content.includes(keyword)) {
+          results.push(index)
+        }
+      })
+
+      this.searchResults = results
+      this.searchResultIndex = results.length > 0 ? 0 : -1
+
+      if (results.length > 0) {
+        this.$nextTick(() => {
+          this.scrollToSearchResult(0)
+        })
+      } else {
+        uni.showToast({ title: '未找到匹配结果', icon: 'none' })
+      }
+    },
+
+    // 滚动到指定搜索结果
+    scrollToSearchResult(index) {
+      if (index < 0 || index >= this.searchResults.length) return
+      const msgIdx = this.searchResults[index]
+      const message = this.messages[msgIdx]
+      if (message) {
+        this.scrollIntoViewId = this.getMessageKey(message, msgIdx)
+        this.searchResultIndex = index
+      }
+    },
+
+    // 上一个结果
+    scrollToPrevResult() {
+      const idx = this.searchResultIndex - 1
+      if (idx >= 0) {
+        this.scrollToSearchResult(idx)
+      } else {
+        uni.showToast({ title: '已到顶部', icon: 'none' })
+      }
+    },
+
+    // 下一个结果
+    scrollToNextResult() {
+      const idx = this.searchResultIndex + 1
+      if (idx < this.searchResults.length) {
+        this.scrollToSearchResult(idx)
+      } else {
+        uni.showToast({ title: '已到底部', icon: 'none' })
+      }
+    },
+
+    // 用户消息关键词高亮
+    highlightContent(content) {
+      if (!this.searchKeyword || !content) {
+        return content
+      }
+      return this._wrapHighlight(content, this.searchKeyword)
+    },
+
+    // AI 消息渲染（含关键词高亮）
+    getAIDisplayContent(content) {
+      if (!this.searchKeyword || !content) {
+        return this.parseMarkdown(content)
+      }
+      // 先做 markdown 渲染，再做关键词高亮
+      const mdHtml = this.parseMarkdown(content)
+      return this._wrapHighlightInHtml(mdHtml, this.searchKeyword)
+    },
+
+    // 在纯文本中高亮关键词（用于用户消息）
+    _wrapHighlight(text, keyword) {
+      if (!keyword || !text) return text
+      const parts = text.split(new RegExp('(' + this._escapeRegExp(keyword) + ')', 'gi'))
+      return parts.map(part => {
+        if (part.toLowerCase() === keyword.toLowerCase()) {
+          return `<span style="background:#ffe066;color:#333;padding:0 2rpx;border-radius:4rpx;">${part}</span>`
+        }
+        return part
+      }).join('')
+    },
+
+    // 在 HTML 中高亮关键词（用于 AI 消息的 markdown 结果）
+    _wrapHighlightInHtml(html, keyword) {
+      if (!keyword || !html) return html
+      // 只高亮文本节点，不破坏 HTML 标签
+      const escaped = this._escapeRegExp(keyword)
+      // 匹配 <xxx> 之外的文本
+      return html.replace(/(>|^)([^<]+)(?=<|$)/g, (match, prefix, text) => {
+        if (!text) return match
+        const highlighted = text.replace(
+          new RegExp('(' + escaped + ')', 'gi'),
+          '<span style="background:#ffe066;color:#333;padding:0 2rpx;border-radius:4rpx;">$1</span>'
+        )
+        return prefix + highlighted
+      })
+    },
+
+    // 转义正则特殊字符
+    _escapeRegExp(str) {
+      return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
+    },
+
     // 重试消息
     async retryMessage(message) {
       // 找到对应的用户消息
@@ -4206,5 +4454,121 @@ $radius-lg: 36rpx;
     user-select: text;
     -webkit-user-select: text;
   }
+
+  // 搜索入口浮动按钮
+  .search-entrance {
+    position: absolute;
+    top: 12rpx;
+    right: 16rpx;
+    z-index: 10;
+    width: 56rpx;
+    height: 56rpx;
+    border-radius: 50%;
+    background: rgba(0, 0, 0, 0.05);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    
+    .search-entrance-icon {
+      font-size: 28rpx;
+    }
+    
+    &:active {
+      background: rgba(0, 0, 0, 0.12);
+    }
+  }
+
+  // 搜索浮条（位于消息区和输入框之间）
+  .search-bar {
+    display: flex;
+    align-items: center;
+    padding: 10rpx 24rpx;
+    background: #f5f5f5;
+    border-top: 1rpx solid #e8e8e8;
+    gap: 10rpx;
+
+    .search-bar-close {
+      font-size: 32rpx;
+      color: #888;
+      flex-shrink: 0;
+      line-height: 1;
+
+      &:active {
+        color: #333;
+      }
+    }
+
+    .search-bar-input-wrap {
+      flex: 1;
+      display: flex;
+      align-items: center;
+      background: #fff;
+      border-radius: 8rpx;
+      padding: 0 14rpx;
+      height: 58rpx;
+      border: 1rpx solid #ddd;
+
+      .search-bar-icon {
+        font-size: 24rpx;
+        color: #999;
+        margin-right: 8rpx;
+        flex-shrink: 0;
+        line-height: 1;
+      }
+
+      .search-bar-input {
+        flex: 1;
+        height: 58rpx;
+        font-size: 28rpx;
+        background: transparent;
+        border: none;
+        outline: none;
+        color: #333;
+      }
+    }
+
+    .search-bar-actions {
+      display: flex;
+      align-items: center;
+      gap: 4rpx;
+      flex-shrink: 0;
+
+      .search-bar-count {
+        font-size: 24rpx;
+        color: #999;
+        min-width: 44rpx;
+        text-align: center;
+      }
+
+      .search-bar-nav {
+        font-size: 32rpx;
+        color: #666;
+        padding: 6rpx 10rpx;
+        line-height: 1;
+
+        &:active {
+          color: #333;
+        }
+      }
+    }
+
+    .search-bar-clear {
+      font-size: 26rpx;
+      color: #07c160;
+      flex-shrink: 0;
+      white-space: nowrap;
+
+      &:active {
+        opacity: 0.6;
+      }
+    }
+  }
+
+  // 用户消息 rich-text 高亮（搜索时替代 <text>）
+  .message-rich-text {
+    font-size: 28rpx;
+    line-height: 1.7;
+    letter-spacing: 0.8rpx;
+  }
 }
 </style>
diff --git a/pages_tool/ai-chat/index.vue b/pages_tool/ai-chat/index.vue
index fb5f4a0..4654148 100644
--- a/pages_tool/ai-chat/index.vue
+++ b/pages_tool/ai-chat/index.vue
@@ -17,6 +17,7 @@
       <ai-chat-message 
         ref="chat"
         :initial-messages="initialMessages"
+        :fallback-welcome="fallbackWelcome"
         :user-avatar="userAvatar"
         :ai-avatar="aiAvatar"
         @message-sent="onMessageSent"
@@ -84,15 +85,8 @@ export default {
   },
   data() {
     return {
-      initialMessages: [
-        {
-          id: 1,
-          role: 'ai',
-          type: 'text',
-          content: '您好！我是AI智能客服，很高兴为您服务！\n\n我可以帮您：\n• 解答产品相关问题\n• 处理订单问题\n• 提供技术支持\n• 推荐相关商品\n\n请告诉我您需要什么帮助？',
-          timestamp: Date.now() - 60000,
-        }
-      ],
+      initialMessages: [],
+      fallbackWelcome: '您好！我是AI智能客服，很高兴为您服务！\n\n我可以帮您：\n• 解答产品相关问题\n• 处理订单问题\n• 提供技术支持\n• 推荐相关商品\n\n请告诉我您需要什么帮助？',
 
       // --- 系统导航栏/状态栏相关 ---
       navBarHeight: 44,   // uni-page-head 系统导航栏，默认高度为44px