diff --git a/src/kit/shell/shellEngine.c b/src/kit/shell/shellEngine.c
index 938090740e5642f316e3f9049da799a07a98e5ab..a2c063a97e89327c1ce05e64a34b6b771c0ce59c 100644
--- a/src/kit/shell/shellEngine.c
+++ b/src/kit/shell/shellEngine.c
@@ -480,7 +480,7 @@ int shellDumpResult(TAOS *con, char *fname, int *error_no) {
               case TSDB_DATA_TYPE_NCHAR:
                 memset(t_str, 0, TSDB_MAX_BYTES_PER_ROW);
                 memcpy(t_str, row[i], fields[i].bytes);
-                fprintf(fp, "%s", t_str);
+                fprintf(fp, "\'%s\'", t_str);
                 break;
               case TSDB_DATA_TYPE_TIMESTAMP:
                 fprintf(fp, "%ld", *(int64_t *)row[i]);