diff --git a/tools/shell/src/shellCommand.c b/tools/shell/src/shellCommand.c
index 0b26d685fdcd4ab6bf08683494d2bf7ca57858d1..c34b22b691c077b7e08ca7afb4e929f6851d95e2 100644
--- a/tools/shell/src/shellCommand.c
+++ b/tools/shell/src/shellCommand.c
@@ -101,11 +101,8 @@ void shellInsertChar(SShellCmd *cmd, char *c, int32_t size) {
   /* update the values */
   cmd->commandSize += size;
   cmd->cursorOffset += size;
-  for (int i = 0; i < size; i++) {
-    taosMbToWchar(&wc, c + i, size);
-    cmd->screenOffset += taosWcharWidth(wc);
-    cmd->endOffset    += taosWcharWidth(wc);
-  }  
+  cmd->screenOffset += taosWcharWidth(wc);
+  cmd->endOffset    += taosWcharWidth(wc);
 #ifdef WINDOWS
 #else
   shellShowOnScreen(cmd);