diff --git a/api/adapter2.go b/api/adapter2.go
index bd69b95..467b86e 100644
--- a/api/adapter2.go
+++ b/api/adapter2.go
@@ -138,8 +138,19 @@ func (a *Adapter) parseSql(report AdapterReport) string {
 }
 
 func (a *Adapter) tableName(endpoint string, reqType adapterReqType) string {
-	sum := md5.Sum([]byte(fmt.Sprintf("%s%d", endpoint, reqType)))
-	return fmt.Sprintf("t_%s", hex.EncodeToString(sum[:]))
+	var tbname string
+	if reqType == rest {
+		tbname = fmt.Sprintf("adapter_req_%s_%s", endpoint, "rest")
+	} else {
+		tbname = fmt.Sprintf("adapter_req_%s_%s", endpoint, "ws")
+	}
+
+	if len(tbname) <= util.MAX_TABLE_NAME_LEN {
+		return util.ToValidTableName(tbname)
+	} else {
+		sum := md5.Sum([]byte(fmt.Sprintf("%s%d", endpoint, reqType)))
+		return fmt.Sprintf("adapter_req_%s", hex.EncodeToString(sum[:]))
+	}
 }
 
 func (a *Adapter) createDatabase() error {
diff --git a/api/gen_metric.go b/api/gen_metric.go
index 5814a1c..5534fe4 100644
--- a/api/gen_metric.go
+++ b/api/gen_metric.go
@@ -30,6 +30,8 @@ var gmLogger = log.GetLogger("GEN")
 
 var MAX_SQL_LEN = 1000000
 
+var STABLE_NAME_KEY = "priv_stn"
+
 type ColumnSeq struct {
 	tagNames    []string
 	metricNames []string
@@ -168,7 +170,7 @@ func NewGeneralMetric(conf *config.Config) *GeneralMetric {
 			Scheme:   protocol,
 			Host:     fmt.Sprintf("%s:%d", conf.TDengine.Host, conf.TDengine.Port),
 			Path:     "/influxdb/v1/write",
-			RawQuery: fmt.Sprintf("db=%s&precision=ms", conf.Metrics.Database.Name),
+			RawQuery: fmt.Sprintf("db=%s&precision=ms&table_name_key=%s", conf.Metrics.Database.Name, STABLE_NAME_KEY),
 		},
 	}
 	return imp
@@ -499,6 +501,127 @@ func writeTags(tags []Tag, stbName string, buf *bytes.Buffer) {
 			buf.WriteString(fmt.Sprintf(",%s=%s", name, "unknown"))
 		}
 	}
+
+	// have sub table name
+	if _, ok := tagMap[STABLE_NAME_KEY]; ok {
+		return
+	}
+
+	subTableName := get_sub_table_name_valid(stbName, tagMap)
+	if subTableName != "" {
+		buf.WriteString(fmt.Sprintf(",%s=%s", STABLE_NAME_KEY, subTableName))
+	} else {
+		gmLogger.Errorf("get sub stable name error, stable name:%s, tag map:%v", stbName, tagMap)
+	}
+}
+
+func checkKeysExist(data map[string]string, keys ...string) bool {
+	for _, key := range keys {
+		_, ok := data[key]
+		if !ok {
+			return false
+		}
+	}
+	return true
+}
+
+func get_sub_table_name_valid(stbName string, tagMap map[string]string) string {
+	stbName = get_sub_table_name(stbName, tagMap)
+	return util.ToValidTableName(stbName)
+}
+
+func get_sub_table_name(stbName string, tagMap map[string]string) string {
+	if strings.HasPrefix(stbName, "taosx") {
+		switch stbName {
+		case "taosx_sys":
+			if checkKeysExist(tagMap, "taosx_id") {
+				return fmt.Sprintf("sys_%s", tagMap["taosx_id"])
+			}
+		case "taosx_agent":
+			if checkKeysExist(tagMap, "taosx_id", "agent_id") {
+				return fmt.Sprintf("agent_%s_%s", tagMap["taosx_id"], tagMap["agent_id"])
+			}
+		case "taosx_connector":
+			if checkKeysExist(tagMap, "taosx_id", "ds_name", "task_id") {
+				return fmt.Sprintf("connector_%s_%s_%s", tagMap["taosx_id"], tagMap["ds_name"], tagMap["task_id"])
+			}
+		default:
+			if strings.HasPrefix(stbName, "taosx_task_") {
+				ds_name := stbName[len("taosx_task_"):]
+				if checkKeysExist(tagMap, "taosx_id", "task_id") {
+					return fmt.Sprintf("task_%s_%s_%s", tagMap["taosx_id"], ds_name, tagMap["task_id"])
+				}
+			}
+			return ""
+		}
+	}
+
+	switch stbName {
+	case "taosd_cluster_info":
+		if checkKeysExist(tagMap, "cluster_id") {
+			return fmt.Sprintf("cluster_%s", tagMap["cluster_id"])
+		}
+	case "taosd_vgroups_info":
+		if checkKeysExist(tagMap, "cluster_id", "vgroup_id", "database_name") {
+			return fmt.Sprintf("vginfo_%s_vgroup_%s_cluster_%s", tagMap["database_name"], tagMap["vgroup_id"], tagMap["cluster_id"])
+		}
+	case "taosd_dnodes_info":
+		if checkKeysExist(tagMap, "cluster_id", "dnode_id") {
+			return fmt.Sprintf("dinfo_%s_cluster_%s", tagMap["dnode_id"], tagMap["cluster_id"])
+		}
+	case "taosd_dnodes_status":
+		if checkKeysExist(tagMap, "cluster_id", "dnode_id") {
+			return fmt.Sprintf("dstatus_%s_cluster_%s", tagMap["dnode_id"], tagMap["cluster_id"])
+		}
+	case "taosd_dnodes_log_dirs":
+		if checkKeysExist(tagMap, "cluster_id", "dnode_id", "data_dir_name") {
+			subTableName := fmt.Sprintf("dlog_%s_%s_cluster_%s", tagMap["dnode_id"], tagMap["data_dir_name"], tagMap["cluster_id"])
+			if len(subTableName) <= util.MAX_TABLE_NAME_LEN {
+				return subTableName
+			}
+			return fmt.Sprintf("dlog_%s_%s_cluster_%s", tagMap["dnode_id"],
+				util.GetMd5HexStr(tagMap["data_dir_name"]),
+				tagMap["cluster_id"])
+		}
+	case "taosd_dnodes_data_dirs":
+		if checkKeysExist(tagMap, "cluster_id", "dnode_id", "data_dir_name", "data_dir_level") {
+			subTableName := fmt.Sprintf("ddata_%s_%s_level_%s_cluster_%s", tagMap["dnode_id"], tagMap["data_dir_name"], tagMap["data_dir_level"], tagMap["cluster_id"])
+			if len(subTableName) <= util.MAX_TABLE_NAME_LEN {
+				return subTableName
+			}
+			return fmt.Sprintf("ddata_%s_%s_level_%s_cluster_%s", tagMap["dnode_id"],
+				util.GetMd5HexStr(tagMap["data_dir_name"]),
+				tagMap["data_dir_level"],
+				tagMap["cluster_id"])
+		}
+	case "taosd_mnodes_info":
+		if checkKeysExist(tagMap, "cluster_id", "mnode_id") {
+			return fmt.Sprintf("minfo_%s_cluster_%s", tagMap["mnode_id"], tagMap["cluster_id"])
+		}
+	case "taosd_vnodes_info":
+		if checkKeysExist(tagMap, "cluster_id", "database_name", "vgroup_id", "dnode_id") {
+			return fmt.Sprintf("vninfo_%s_dnode_%s_vgroup_%s_cluster_%s", tagMap["database_name"], tagMap["dnode_id"], tagMap["vgroup_id"], tagMap["cluster_id"])
+		}
+	case "taosd_sql_req":
+		if checkKeysExist(tagMap, "username", "sql_type", "result", "dnode_id", "vgroup_id", "cluster_id") {
+			return fmt.Sprintf("taosdsql_%s_%s_%s_%s_vgroup_%s_cluster_%s", tagMap["username"],
+				tagMap["sql_type"], tagMap["result"], tagMap["dnode_id"], tagMap["vgroup_id"], tagMap["cluster_id"])
+		}
+	case "taos_sql_req":
+		if checkKeysExist(tagMap, "username", "sql_type", "result", "cluster_id") {
+			return fmt.Sprintf("taossql_%s_%s_%s_cluster_%s", tagMap["username"],
+				tagMap["sql_type"], tagMap["result"], tagMap["cluster_id"])
+		}
+	case "taos_slow_sql":
+		if checkKeysExist(tagMap, "username", "duration", "result", "cluster_id") {
+			return fmt.Sprintf("slowsql_%s_%s_%s_cluster_%s", tagMap["username"],
+				tagMap["duration"], tagMap["result"], tagMap["cluster_id"])
+		}
+
+	default:
+		return ""
+	}
+	return ""
 }
 
 func contains(array []string, item string) bool {
diff --git a/api/gen_metric_test.go b/api/gen_metric_test.go
index 2bda965..4ccfa0c 100644
--- a/api/gen_metric_test.go
+++ b/api/gen_metric_test.go
@@ -254,3 +254,104 @@ func TestGenMetric(t *testing.T) {
 		}
 	})
 }
+func TestGetSubTableName(t *testing.T) {
+	tests := []struct {
+		stbName string
+		tagMap  map[string]string
+		want    string
+	}{
+		{
+			stbName: "taosx_sys",
+			tagMap:  map[string]string{"taosx_id": "123"},
+			want:    "sys_123",
+		},
+		{
+			stbName: "taosx_agent",
+			tagMap:  map[string]string{"taosx_id": "123", "agent_id": "456"},
+			want:    "agent_123_456",
+		},
+		{
+			stbName: "taosx_connector",
+			tagMap:  map[string]string{"taosx_id": "123", "ds_name": "ds", "task_id": "789"},
+			want:    "connector_123_ds_789",
+		},
+		{
+			stbName: "taosx_task_example",
+			tagMap:  map[string]string{"taosx_id": "123", "task_id": "789"},
+			want:    "task_123_example_789",
+		},
+		{
+			stbName: "taosd_cluster_info",
+			tagMap:  map[string]string{"cluster_id": "123"},
+			want:    "cluster_123",
+		},
+		{
+			stbName: "taosd_vgroups_info",
+			tagMap:  map[string]string{"cluster_id": "123", "vgroup_id": "456", "database_name": "db"},
+			want:    "vginfo_db_vgroup_456_cluster_123",
+		},
+		{
+			stbName: "taosd_dnodes_info",
+			tagMap:  map[string]string{"cluster_id": "123", "dnode_id": "123"},
+			want:    "dinfo_123_cluster_123",
+		},
+		{
+			stbName: "taosd_dnodes_status",
+			tagMap:  map[string]string{"cluster_id": "123", "dnode_id": "123"},
+			want:    "dstatus_123_cluster_123",
+		},
+		{
+			stbName: "taosd_dnodes_log_dirs",
+			tagMap:  map[string]string{"cluster_id": "123", "dnode_id": "123", "data_dir_name": "log"},
+			want:    "dlog_123_log_cluster_123",
+		},
+		{
+			stbName: "taosd_dnodes_log_dirs",
+			tagMap:  map[string]string{"cluster_id": "123", "dnode_id": "123", "data_dir_name": "loglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglogloglog"},
+			want:    "dlog_123_9cdc719961a632a27603cd5ed9f1aee2_cluster_123",
+		},
+		{
+			stbName: "taosd_dnodes_data_dirs",
+			tagMap:  map[string]string{"cluster_id": "123", "dnode_id": "123", "data_dir_name": "data", "data_dir_level": "5"},
+			want:    "ddata_123_data_level_5_cluster_123",
+		},
+		{
+			stbName: "taosd_dnodes_data_dirs",
+			tagMap:  map[string]string{"cluster_id": "123", "dnode_id": "123", "data_dir_name": "datadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadatadata", "data_dir_level": "5"},
+			want:    "ddata_123_03bf8dffdf6b97e08f347c6ae795998b_level_5_cluster_123",
+		},
+		{
+			stbName: "taosd_mnodes_info",
+			tagMap:  map[string]string{"cluster_id": "123", "mnode_id": "12"},
+			want:    "minfo_12_cluster_123",
+		},
+		{
+			stbName: "taosd_vnodes_info",
+			tagMap:  map[string]string{"cluster_id": "123", "database_name": "db", "vgroup_id": "456", "dnode_id": "789"},
+			want:    "vninfo_db_dnode_789_vgroup_456_cluster_123",
+		},
+		{
+			stbName: "taosd_sql_req",
+			tagMap:  map[string]string{"username": "user", "sql_type": "select", "result": "success", "dnode_id": "123", "vgroup_id": "456", "cluster_id": "123"},
+			want:    "taosdsql_user_select_success_123_vgroup_456_cluster_123",
+		},
+		{
+			stbName: "taos_sql_req",
+			tagMap:  map[string]string{"username": "user", "sql_type": "select", "result": "success", "cluster_id": "123"},
+			want:    "taossql_user_select_success_cluster_123",
+		},
+		{
+			stbName: "taos_slow_sql",
+			tagMap:  map[string]string{"username": "user", "duration": "100ms", "result": "success", "cluster_id": "123"},
+			want:    "slowsql_user_100ms_success_cluster_123",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.stbName, func(t *testing.T) {
+			if got := get_sub_table_name_valid(tt.stbName, tt.tagMap); got != tt.want {
+				panic(fmt.Sprintf("get_sub_table_name() = %v, want %v", got, tt.want))
+			}
+		})
+	}
+}
diff --git a/monitor/monitor.go b/monitor/monitor.go
index e485d69..6f3083e 100644
--- a/monitor/monitor.go
+++ b/monitor/monitor.go
@@ -2,8 +2,6 @@ package monitor
 
 import (
 	"context"
-	"crypto/md5"
-	"encoding/hex"
 	"fmt"
 	"os"
 	"time"
@@ -56,9 +54,15 @@ func StartMonitor(identity string, conf *config.Config, reporter *api.Reporter)
 				reporter.GetTotalRep().Store(0)
 			}
 
-			kn := md5.Sum([]byte(identity))
-			sql := fmt.Sprintf("insert into `keeper_monitor_%s` using keeper_monitor tags ('%s') values ( now, "+
-				" %f, %f, %d)", hex.EncodeToString(kn[:]), identity, cpuPercent, memPercent, totalReport)
+			var kn string
+			if len(identity) <= util.MAX_TABLE_NAME_LEN {
+				kn = util.ToValidTableName(identity)
+			} else {
+				kn = util.GetMd5HexStr(identity)
+			}
+
+			sql := fmt.Sprintf("insert into `km_%s` using keeper_monitor tags ('%s') values ( now, "+
+				" %f, %f, %d)", kn, identity, cpuPercent, memPercent, totalReport)
 			conn, err := db.NewConnectorWithDb(conf.TDengine.Username, conf.TDengine.Password, conf.TDengine.Host,
 				conf.TDengine.Port, conf.Metrics.Database.Name, conf.TDengine.Usessl)
 			if err != nil {
diff --git a/util/util.go b/util/util.go
index bea25ed..a739c23 100644
--- a/util/util.go
+++ b/util/util.go
@@ -1,11 +1,14 @@
 package util
 
 import (
+	"crypto/md5"
+	"encoding/hex"
 	"os"
 	"strconv"
 	"strings"
 	"sync/atomic"
 	"time"
+	"unicode"
 
 	"github.com/taosdata/taoskeeper/infrastructure/config"
 )
@@ -14,6 +17,8 @@ import (
 var globalCounter64 uint64
 var globalCounter32 uint32
 
+var MAX_TABLE_NAME_LEN = 190
+
 func init() {
 	atomic.StoreUint64(&globalCounter64, 0)
 	atomic.StoreUint32(&globalCounter32, 0)
@@ -123,3 +128,27 @@ func GetQidOwn() uint64 {
 	qid64 := uint64(config.Conf.InstanceID)<<56 | id
 	return qid64
 }
+
+func GetMd5HexStr(str string) string {
+	sum := md5.Sum([]byte(str))
+	return hex.EncodeToString(sum[:])
+}
+
+func isValidChar(r rune) bool {
+	return unicode.IsLetter(r) || unicode.IsDigit(r) || r == '_'
+}
+
+func ToValidTableName(input string) string {
+	var builder strings.Builder
+
+	for _, r := range input {
+		if isValidChar(r) {
+			builder.WriteRune(unicode.ToLower(r))
+		} else {
+			builder.WriteRune('_')
+		}
+	}
+
+	result := builder.String()
+	return result
+}