diff --git a/Platform/user/configm/config-server/dhcp_config/dhcp_lib.c b/Platform/user/configm/config-server/dhcp_config/dhcp_lib.c
index 582c72204..edc7d06cf 100644
--- a/Platform/user/configm/config-server/dhcp_config/dhcp_lib.c
+++ b/Platform/user/configm/config-server/dhcp_config/dhcp_lib.c
@@ -42,6 +42,9 @@ int del_interface_dhcp_cb(BR_EVENT_TYPE event_type, br_event_t event_arg)
     if(mask){
         free(mask);
     }
+    if(cmd){
+        free(cmd);
+    }
     /*ÔËÐÐÅäÖÃÎļþ*/
     system("service isc-dhcp-server restart");
     return ret;
@@ -225,9 +228,11 @@ int file_consist_str(char *fname, char *str){
     while((fgets(line,1000,fp))!=NULL){
         char *p = strstr(line, str);
         if(p){
+           fclose(fp);
            return TRUE; 
         }
     }
+    fclose(fp);
     return FALSE;
 }