diff --git a/src/kit/shell/src/shellCheck.c b/src/kit/shell/src/shellCheck.c
index bf73cdfa1324855ece7e69d1095bca862605bd23..5821281a036674e7a60edc2f63500822a358b1bc 100644
--- a/src/kit/shell/src/shellCheck.c
+++ b/src/kit/shell/src/shellCheck.c
@@ -111,6 +111,7 @@ static void *shellCheckThreadFp(void *arg) {
   int32_t start = pThread->threadIndex * interval;
   int32_t end = (pThread->threadIndex + 1) * interval;
 
+  if (start >= tbNum) return NULL;
   if (end > tbNum) end = tbNum + 1;
 
   char file[32] = {0};