diff --git a/importSampleData/app/main.go b/importSampleData/app/main.go
index e45e33e159f8636f8bdc5156b3b9b0947453bab4..3589c8c2a98f31e78c4dac3496f804605a0b2314 100644
--- a/importSampleData/app/main.go
+++ b/importSampleData/app/main.go
@@ -628,7 +628,7 @@ func insertData(threadIndex, start, end int, wg *sync.WaitGroup, successRows []i
 					buffer.WriteString(",")
 
 					for _, field := range subTableInfo.config.Fields {
-						buffer.WriteString(getFieldValue(currentRow[strings.ToLower(field.Name)]))
+						buffer.WriteString(getFieldValue(currentRow[strings.ToLower(field.Name)],field.Type))
 						buffer.WriteString(",")
 					}
 
@@ -708,7 +708,10 @@ func executeBatchInsert(insertSql string, connection *sql.DB) int64 {
 	return affected
 }
 
-func getFieldValue(fieldValue interface{}) string {
+func getFieldValue(fieldValue interface{},fieldtype interface{}) string {
+	if fieldtype == "timestamp" || fieldtype == "bigint"  {
+		return fmt.Sprintf("%v", fieldValue)
+	}
 	return fmt.Sprintf("'%v'", fieldValue)
 }
 
diff --git a/importSampleData/config/cfg.toml b/importSampleData/config/cfg.toml
index 52a5d5f3169d21ce17039ead956250a636b37a01..545bab071ad66af2f59447b3449c6606e2ff1078 100644
--- a/importSampleData/config/cfg.toml
+++ b/importSampleData/config/cfg.toml
@@ -18,6 +18,8 @@ tags = [
 
 fields = [
     # 字段列表，name 为字段名称，type 为字段类型
+	# 除主键外，其他field如果也要设置为timestamp，可以是type ="timestamp" 类型，此时value可同时支持'2006-01-02 15:04:05.000'和millisecond格式
+	# 也可以是type = "bigint",此时value只支持millisecond格式
     { name = "ts",                  type = "timestamp" },
     { name = "temperature",         type = "int" },
     { name = "humidity",            type = "float" },