diff --git a/code/application/source/sf_app/code/source/4gMng/sf_sms.c b/code/application/source/sf_app/code/source/4gMng/sf_sms.c
index 5e6078f00..65d4d476b 100755
--- a/code/application/source/sf_app/code/source/4gMng/sf_sms.c
+++ b/code/application/source/sf_app/code/source/4gMng/sf_sms.c
@@ -1721,7 +1721,11 @@ SINT32 sf_check_message(void)
 					char *temp = NULL;
 					char *delim;//
 					delim = "\"";
-					temp = strtok(strstr((const char *)gsmPara, strtmp), delim);
+                    char *result = strstr((const char *)gsmPara, "+QCFG:");
+                    if(result != NULL)
+                    {
+                        temp = strtok(strstr(result, strtmp), delim);
+                    }
 					int mm = 0;
 					char strtmp[12][70] = { { 0 } };
 
@@ -2153,7 +2157,7 @@ SINT32 sf_simcom_check_need_send(void)
 }
 
 /*************************************************
-   Function: sf_check_message
+   Function: sf_power_off_check_sms
    Description: Check unread and read messages.
    Input:  N/A
    Output: N/A