diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java b/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
index 9adbd89..5e3c27a 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
@@ -489,7 +489,7 @@ public class TodoCenterManage {
         String organizationName = dingOrganization.getOrganizationName();
         workNoticeInfo.setOrganizationName(organizationName);
         // 构建唯一的消息ID
-        String bizMsgId = "ZD_WORK_NOTICE_" + "_" + organizationCode + "_" + organizationName + accountId;
+        String bizMsgId = "ZD_WORK_NOTICE_" + StrUtil.UNDERLINE + organizationCode + StrUtil.UNDERLINE + organizationName + accountId;
         workNoticeInfo.setBizMsgId(bizMsgId);
         String receiverUserId = String.valueOf(accountId);
         workNoticeInfo.setReceiverUserId(receiverUserId);