diff --git a/app/ticket/service/ConversationService.php b/app/ticket/service/ConversationService.php
index 80e871c..7682079 100644
--- a/app/ticket/service/ConversationService.php
+++ b/app/ticket/service/ConversationService.php
@@ -23,7 +23,7 @@ class ConversationService
         $ossservice = new OssService();
         foreach ($result as $key => $value) {
             $result[$key]['content'] = str_replace($status_fanyi,$ticket_status,$value['content']);
-            $result[$key]['attachment'] = explode(",", $value['attachment']);
+            $result[$key]['attachment'] = unserialize($value['attachment']);
             foreach ($result[$key]['attachment'] as $k => $attachment) {
                 $result[$key]['attachment_full'][$k] = (!empty($attachment))?$ossservice->generatePrivateUrl($attachment):'';
             }
@@ -34,7 +34,7 @@ class ConversationService
     public function add(array $data)
     {
         try {
-            $data['attachment'] = implode(",", $data['attachment']);
+            $data['attachment'] = serialize($data['attachment']);
             return (new ConversationLogic())->add($data);
         } catch (\Throwable $e) {
             throw $e;
@@ -45,7 +45,7 @@ class ConversationService
     {
         try {
             Db::beginTransaction();
-            $data['attachment'] = implode(",", $data['attachment']);
+            $data['attachment'] = serialize($data['attachment']);
             $result = (new ConversationLogic())->edit($data);
             Db::commit();
             return $result;
diff --git a/app/ticket/service/TicketService.php b/app/ticket/service/TicketService.php
index 8851914..3d7036a 100644
--- a/app/ticket/service/TicketService.php
+++ b/app/ticket/service/TicketService.php
@@ -53,7 +53,7 @@ class TicketService
                 'ticket_id' => $result->id,
                 'content' => $cleanContent,
                 'user_id' => $data['user_id'],
-                'attachment' => implode(",", $data['attachment']),
+                'attachment' => serialize($data['attachment']),
             ];
             (new ConversationService())->add($conversation);