diff --git a/lib/chat/ChatPage.dart b/lib/chat/ChatPage.dart
index 1a33fd9..0da9f09 100644
--- a/lib/chat/ChatPage.dart
+++ b/lib/chat/ChatPage.dart
@@ -216,7 +216,7 @@ class _ChatPageState extends State<ChatPage> {
         MsgModel msg = MsgHandler.createSendMsg(
             ChatType.valueOf(originMsg.msgType), originMsg.msgContent);
         msg.extraInfo = originMsg.extraInfo;
-        if(originMsg.extraFile.contains('http')){
+        if(originMsg.extraFile==null ||originMsg.extraFile.contains('http')){
           msg.extraFile = originMsg.extraFile;
         }else{
           msg.extraFile = UploadUtil().getFullUrl(originMsg.extraFile, originMsg.sessionId, originMsg.channelType);
diff --git a/lib/chat/group_chat_view.dart b/lib/chat/group_chat_view.dart
index 631d9c7..ef5d1cc 100644
--- a/lib/chat/group_chat_view.dart
+++ b/lib/chat/group_chat_view.dart
@@ -113,7 +113,7 @@ class _GroupChatPageState extends State<GroupChatPage> {
             channelType: ChatChannelType.Group);
         msg.extraInfo = originMsg.extraInfo;
 //        msg.extraFile = originMsg.extraFile;
-        if(originMsg.extraFile.contains('http')){
+        if(originMsg.extraFile==null ||originMsg.extraFile.contains('http')){
           msg.extraFile = originMsg.extraFile;
         }else{
           msg.extraFile = UploadUtil().getFullUrl(originMsg.extraFile, originMsg.sessionId, originMsg.channelType);