diff --git a/cloud-manager-sms/src/main/java/com/cm/manager/sms/service/impl/SmsServiceImpl.java b/cloud-manager-sms/src/main/java/com/cm/manager/sms/service/impl/SmsServiceImpl.java
index b9f2f5c..72018dd 100644
--- a/cloud-manager-sms/src/main/java/com/cm/manager/sms/service/impl/SmsServiceImpl.java
+++ b/cloud-manager-sms/src/main/java/com/cm/manager/sms/service/impl/SmsServiceImpl.java
@@ -198,15 +198,16 @@ public class SmsServiceImpl extends AbstractService implements ISmsService {
      */
     private void defaultSms(String phone, String content) throws Exception {
         SmsDefaultProperties smsDefaultProperties = smsProperties.getDefaultSms();
+        StringBuilder contentSB = new StringBuilder(smsDefaultProperties.getSign()).append(content);
         String url = "https://dx.ipyy.net/sms.aspx?action=send&userid=&account={account}&password={password}&mobile={mobile}&content={content}&sendTime=&extno={extno}";
         String[] paramArray = new String[]{
                 smsDefaultProperties.getAccount(),
                 smsDefaultProperties.getPassword(),
                 phone,
-                smsDefaultProperties.getSign() + content,
+                contentSB.toString(),
                 phone
         };
-        sendMessage(url, paramArray, phone, content);
+        sendMessage(url, paramArray, phone, contentSB.toString());
     }
 
     /**