diff --git a/tools/taos-tools/inc/benchCsv.h b/tools/taos-tools/inc/benchCsv.h
index f9f87aa341..e80f73bcda 100644
--- a/tools/taos-tools/inc/benchCsv.h
+++ b/tools/taos-tools/inc/benchCsv.h
@@ -57,7 +57,8 @@ typedef struct {
 typedef struct {
     CsvNamingType   naming_type;
     size_t          total_threads;
-    char            thread_formatter[TINY_BUFF_LEN];
+    char            mode[MIDDLE_BUFF_LEN];
+    char            thread_formatter[SMALL_BUFF_LEN];
     char            csv_header[LARGE_BUFF_LEN];
     int             csv_header_length;
     SDataBase*      db;
diff --git a/tools/taos-tools/src/benchCsv.c b/tools/taos-tools/src/benchCsv.c
index 61334c418d..32a48e70d0 100644
--- a/tools/taos-tools/src/benchCsv.c
+++ b/tools/taos-tools/src/benchCsv.c
@@ -479,18 +479,22 @@ static int csvInitWriteMeta(SDataBase* db, SSuperTable* stb, CsvWriteMeta* write
 
     switch (write_meta->naming_type) {
         case CSV_NAMING_I_SINGLE: {
+            (void)snprintf(write_meta->mode, sizeof(write_meta->mode), "interlace|no-time-slice");
             break;
         }
         case CSV_NAMING_I_TIME_SLICE: {
+            (void)snprintf(write_meta->mode, sizeof(write_meta->mode), "interlace|time-slice");
             csvCalcTimestampStep(write_meta);
             break;
         }
         case CSV_NAMING_B_THREAD: {
+            (void)snprintf(write_meta->mode, sizeof(write_meta->mode), "batch|no-time-slice");
             write_meta->total_threads = MIN(g_arguments->nthreads, stb->childTblCount);
             csvGenThreadFormatter(write_meta);
             break;
         }
         case CSV_NAMING_B_THREAD_TIME_SLICE: {
+            (void)snprintf(write_meta->mode, sizeof(write_meta->mode), "batch|time-slice");
             write_meta->total_threads = MIN(g_arguments->nthreads, stb->childTblCount);
             csvGenThreadFormatter(write_meta);
             csvCalcTimestampStep(write_meta);
@@ -1056,6 +1060,8 @@ static int csvGenStbProcess(SDataBase* db, SSuperTable* stb) {
         goto end;
     }
 
+    infoPrint("export csv mode: %s.\n", write_meta->mode);
+
     args = benchCalloc(write_meta->total_threads, sizeof(CsvThreadArgs), false);
     if (!args) {
         ret = -1;