diff --git a/components/utilities/ulog/backend/file_be.c b/components/utilities/ulog/backend/file_be.c
index 693d9abaebe7d463c4a1f3da39d1319ad6e08116..62f3f7ad8394facc6a9f698bfc7bcf88cb377899 100644
--- a/components/utilities/ulog/backend/file_be.c
+++ b/components/utilities/ulog/backend/file_be.c
@@ -79,11 +79,10 @@ static void ulog_file_backend_flush_with_buf(struct ulog_backend *backend)
     struct ulog_file_be *be = (struct ulog_file_be *) backend;
     rt_size_t file_size = 0, write_size = 0;
 
-    if (be->enable == RT_FALSE)
+    if (be->enable == RT_FALSE || be->buf_ptr_now == be->file_buf)
     {
         return;
     }
-
     if (be->cur_log_file_fd < 0)
     {
         /* check log file directory  */