diff --git a/docker/mysql/my.cnf b/docker/mysql/my.cnf
index d3d42fb8d..79c61f619 100644
--- a/docker/mysql/my.cnf
+++ b/docker/mysql/my.cnf
@@ -1,27 +1,26 @@
-[mysqld]
-# 字符集设置
-character-set-server=utf8mb4
-collation-server=utf8mb4_unicode_ci
-
-# 连接设置
-max_connections=100
-wait_timeout=28800
-interactive_timeout=28800
-
-# 缓冲区设置
-innodb_buffer_pool_size=256M
-key_buffer_size=64M
-
-# 日志设置
-slow_query_log=1
-slow_query_log_file=/var/lib/mysql/slow.log
-long_query_time=2
-
-# 其他设置
-sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
-
-[client]
-default-character-set=utf8mb4
-
-[mysql]
-default-character-set=utf8mb4
\ No newline at end of file
+[mysqld]
+# 字符集设置
+character-set-server=utf8mb4
+collation-server=utf8mb4_unicode_ci
+init_connect='SET NAMES utf8mb4'
+
+
+# 连接设置
+max_connections=100
+wait_timeout=28800
+interactive_timeout=28800
+
+# 缓冲区设置
+innodb_buffer_pool_size=256M
+key_buffer_size=64M
+
+# 日志设置
+slow_query_log=1
+slow_query_log_file=/var/lib/mysql/slow.log
+long_query_time=2
+
+# 其他设置
+sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
+
+[client]
+default-character-set=utf8mb4
diff --git a/src/.env.development b/src/.env.development
index 8e17ceedb..f85fa5e10 100644
--- a/src/.env.development
+++ b/src/.env.development
@@ -11,7 +11,7 @@ DATABASE = shop_mallnew
 USERNAME = shop_mallnew
 PASSWORD = shop_mallnew
 HOSTPORT = 3306
-CHARSET = utf8
+CHARSET = utf8mb4
 DEBUG = true
 [RRDATABASE]
 HOSTNAME = host.docker.internal
diff --git a/src/.env.local b/src/.env.local
index 3afee75f3..3951db31b 100644
--- a/src/.env.local
+++ b/src/.env.local
@@ -11,7 +11,7 @@ DATABASE = shop_dev
 USERNAME = shop_mallnew
 PASSWORD = shop_mallnew
 HOSTPORT = 3306
-CHARSET = utf8
+CHARSET = utf8mb4
 DEBUG = true
 [RRDATABASE]
 HOSTNAME = redis
diff --git a/src/.env.production b/src/.env.production
index 458bde428..15c7f9e0d 100644
--- a/src/.env.production
+++ b/src/.env.production
@@ -15,7 +15,7 @@ DATABASE = shop_mallnew_prod
 USERNAME = prod_user
 PASSWORD = prod_password
 HOSTPORT = 3306
-CHARSET = utf8
+CHARSET = utf8mb4
 DEBUG = false
 
 [redis]
diff --git a/src/addon/aikefu/api/controller/Kefu.php b/src/addon/aikefu/api/controller/Kefu.php
index 7e0272951..6feecd327 100644
--- a/src/addon/aikefu/api/controller/Kefu.php
+++ b/src/addon/aikefu/api/controller/Kefu.php
@@ -159,7 +159,7 @@ class Kefu extends BaseApi
                 'conversation_id' => $result['conversation_id'] ?? $conversation_id,
                 'message_id' => $result['message_id'] ?? '',
                 'role' => 'user',
-                'content' => json_encode($message),
+                'content' => $message ?? '',
             ]);
 
             // 保存机器人回复
@@ -169,7 +169,7 @@ class Kefu extends BaseApi
                 'conversation_id' => $result['conversation_id'] ?? $conversation_id,
                 'message_id' => $result['id'] ?? '',
                 'role' => 'assistant',
-                'content' => json_encode($result['answer'] ?? ''),
+                'content' => $result['answer'] ?? '',
             ]);
 
             // 更新会话状态或创建新会话
diff --git a/src/addon/aikefu/shop/view/kefu/conversation.html b/src/addon/aikefu/shop/view/kefu/conversation.html
index 3cf4d09c1..0709e1ba9 100644
--- a/src/addon/aikefu/shop/view/kefu/conversation.html
+++ b/src/addon/aikefu/shop/view/kefu/conversation.html
@@ -1,26 +1,10 @@
 <style>
     .search-box {
-        padding: 10px 0;
+        padding: 15px;
         border-bottom: 1px solid #eee;
         margin-bottom: 15px;
-    }
-    .search-item {
-        display: inline-block;
-        margin-right: 15px;
-        vertical-align: middle;
-    }
-    .search-item label {
-        display: inline-block;
-        width: 80px;
-        text-align: right;
-        margin-right: 10px;
-        vertical-align: middle;
-    }
-    .search-item input,
-    .search-item select {
-        width: 150px;
-        display: inline-block;
-        vertical-align: middle;
+        background-color: #f9f9f9;
+        border-radius: 4px;
     }
     .layui-btn-container {
         margin-bottom: 15px;
@@ -39,25 +23,29 @@
 
 <div class="layui-card-body">
     <!-- 搜索区域 -->
-    <div class="search-box">
-        <form class="layui-form" id="searchForm">
-            <div class="search-item">
-                <label for="user_id">用户ID</label>
-                <input type="text" name="user_id" id="user_id" placeholder="请输入用户ID" class="layui-input">
+    <div class="search-box layui-form">
+        <div class="layui-form-item" style="margin-bottom: 0;">
+            <div class="layui-inline">
+                <label class="layui-form-label">用户ID</label>
+                <div class="layui-input-inline" style="width: 150px;">
+                    <input type="text" name="user_id" id="user_id" placeholder="请输入用户ID" class="layui-input">
+                </div>
             </div>
-            <div class="search-item">
-                <label for="status">状态</label>
-                <select name="status" id="status" class="layui-select">
-                    <option value="">全部</option>
-                    <option value="1">活跃</option>
-                    <option value="0">已结束</option>
-                </select>
+            <div class="layui-inline">
+                <label class="layui-form-label">状态</label>
+                <div class="layui-input-inline" style="width: 120px;">
+                    <select name="status" id="status" class="layui-select">
+                        <option value="">全部</option>
+                        <option value="1">活跃</option>
+                        <option value="0">已结束</option>
+                    </select>
+                </div>
             </div>
-            <div class="search-item">
+            <div class="layui-inline">
                 <button type="button" class="layui-btn layui-btn-primary" id="searchBtn">搜索</button>
                 <button type="button" class="layui-btn layui-btn-primary" id="resetBtn">重置</button>
             </div>
-        </form>
+        </div>
     </div>
     
     <!-- 表格区域 -->
diff --git a/src/config/database.php b/src/config/database.php
index c9b916350..e1ca93103 100644
--- a/src/config/database.php
+++ b/src/config/database.php
@@ -34,7 +34,7 @@ return [
             // 数据库连接参数
             'params'            => [],
             // 数据库编码默认采用utf8
-            'charset'           => env('database.charset', 'utf8'),
+            'charset'           => env('database.charset', 'utf8mb4'),
             // 数据库表前缀
             'prefix'            => 'lucky_',