diff --git a/config/config.go b/config/config.go
index 08b0c9d6..4f5cd823 100644
--- a/config/config.go
+++ b/config/config.go
@@ -75,6 +75,7 @@ type ShardConfig struct {
 	Type          string   `yaml:"type"`
 	TableRowLimit int      `yaml:"table_row_limit"`
 	DateRange     []string `yaml:"date_range"`
+	TableNamePostfixLength int `yaml:"table_name_postfix_length"`
 }
 
 func ParseConfigData(data []byte) (*Config, error) {
@@ -82,6 +83,9 @@ func ParseConfigData(data []byte) (*Config, error) {
 	if err := yaml.Unmarshal([]byte(data), &cfg); err != nil {
 		return nil, err
 	}
+
+	setDefaultTblNamePostfixLength(&cfg)
+
 	return &cfg, nil
 }
 
@@ -109,3 +113,14 @@ func WriteConfigFile(cfg *Config) error {
 
 	return nil
 }
+
+// set the default tbl_name postfix to 4, tbl_name_xxxx
+func setDefaultTblNamePostfixLength(cfg *Config) error {
+	for i := 0; i < len(cfg.Schema.ShardRule); i++ {
+		if cfg.Schema.ShardRule[i].TableNamePostfixLength == 0 {
+			cfg.Schema.ShardRule[i].TableNamePostfixLength = 4
+		}
+	}
+
+	return nil
+}
diff --git a/proxy/router/router.go b/proxy/router/router.go
index 8de9a011..19e55e79 100644
--- a/proxy/router/router.go
+++ b/proxy/router/router.go
@@ -22,6 +22,7 @@ import (
 	"github.com/flike/kingshard/core/errors"
 	"github.com/flike/kingshard/core/golog"
 	"github.com/flike/kingshard/sqlparser"
+	"strconv"
 )
 
 var (
@@ -46,6 +47,7 @@ type Rule struct {
 	SubTableIndexs []int       //SubTableIndexs store all the index of sharding sub-table
 	TableToNode    map[int]int //key is table index, and value is node index
 	Shard          Shard
+	TableNamePostfixLength int
 }
 
 type Router struct {
@@ -141,6 +143,7 @@ func NewRouter(schemaConfig *config.SchemaConfig) (*Router, error) {
 			rt.Rules[rule.DB] = m
 			rt.Rules[rule.DB][rule.Table] = rule
 		}
+		rt.Rules[rule.DB][rule.Table].TableNamePostfixLength = shard.TableNamePostfixLength
 	}
 	return rt, nil
 }
@@ -525,6 +528,10 @@ func (r *Router) rewriteSelectSql(plan *Plan, node *sqlparser.Select, tableIndex
 		node.Distinct,
 	)
 
+	// tbl name format: tbl_name_xxxx
+	tblPostfixLength := r.GetRule(plan.Rule.DB, plan.Rule.Table).TableNamePostfixLength
+	tblPostfixLengthStr := strconv.Itoa(tblPostfixLength)
+
 	var prefix string
 	//rewrite select expr
 	for _, expr := range node.SelectExprs {
@@ -532,7 +539,7 @@ func (r *Router) rewriteSelectSql(plan *Plan, node *sqlparser.Select, tableIndex
 		case *sqlparser.StarExpr:
 			//for shardTable.*,need replace table into shardTable_xxxx.
 			if string(v.TableName) == plan.Rule.Table {
-				fmt.Fprintf(buf, "%s%s_%04d.*",
+				fmt.Fprintf(buf, "%s%s_%0" + tblPostfixLengthStr + "d.*",
 					prefix,
 					plan.Rule.Table,
 					tableIndex,
@@ -545,7 +552,7 @@ func (r *Router) rewriteSelectSql(plan *Plan, node *sqlparser.Select, tableIndex
 			//into shardTable_xxxx.column as a
 			if colName, ok := v.Expr.(*sqlparser.ColName); ok {
 				if string(colName.Qualifier) == plan.Rule.Table {
-					fmt.Fprintf(buf, "%s%s_%04d.%s",
+					fmt.Fprintf(buf, "%s%s_%0" + tblPostfixLengthStr + "d.%s",
 						prefix,
 						plan.Rule.Table,
 						tableIndex,
@@ -577,13 +584,13 @@ func (r *Router) rewriteSelectSql(plan *Plan, node *sqlparser.Select, tableIndex
 	switch v := (node.From[0]).(type) {
 	case *sqlparser.AliasedTableExpr:
 		if len(v.As) != 0 {
-			fmt.Fprintf(buf, "%s_%04d as %s",
+			fmt.Fprintf(buf, "%s_%0" + tblPostfixLengthStr + "d as %s",
 				sqlparser.String(v.Expr),
 				tableIndex,
 				string(v.As),
 			)
 		} else {
-			fmt.Fprintf(buf, "%s_%04d",
+			fmt.Fprintf(buf, "%s_%0" + tblPostfixLengthStr + "d",
 				sqlparser.String(v.Expr),
 				tableIndex,
 			)
@@ -591,19 +598,19 @@ func (r *Router) rewriteSelectSql(plan *Plan, node *sqlparser.Select, tableIndex
 	case *sqlparser.JoinTableExpr:
 		if ate, ok := (v.LeftExpr).(*sqlparser.AliasedTableExpr); ok {
 			if len(ate.As) != 0 {
-				fmt.Fprintf(buf, "%s_%04d as %s",
+				fmt.Fprintf(buf, "%s_%0" + tblPostfixLengthStr + "d as %s",
 					sqlparser.String(ate.Expr),
 					tableIndex,
 					string(ate.As),
 				)
 			} else {
-				fmt.Fprintf(buf, "%s_%04d",
+				fmt.Fprintf(buf, "%s_%0" + tblPostfixLengthStr + "d",
 					sqlparser.String(ate.Expr),
 					tableIndex,
 				)
 			}
 		} else {
-			fmt.Fprintf(buf, "%s_%04d",
+			fmt.Fprintf(buf, "%s_%0" + tblPostfixLengthStr + "d",
 				sqlparser.String(v.LeftExpr),
 				tableIndex,
 			)
@@ -613,7 +620,7 @@ func (r *Router) rewriteSelectSql(plan *Plan, node *sqlparser.Select, tableIndex
 			buf.Fprintf(" on %v", v.On)
 		}
 	default:
-		fmt.Fprintf(buf, "%s_%04d",
+		fmt.Fprintf(buf, "%s_%0" + tblPostfixLengthStr + "d",
 			sqlparser.String(node.From[0]),
 			tableIndex,
 		)
@@ -693,6 +700,9 @@ func (r *Router) generateInsertSql(plan *Plan, stmt sqlparser.Statement) error {
 		nodeName := r.Nodes[0]
 		sqls[nodeName] = []string{buf.String()}
 	} else {
+		// tbl name format: tbl_name_xxxx
+		tblPostfixLength := r.GetRule(plan.Rule.DB, plan.Rule.Table).TableNamePostfixLength
+		tblPostfixLengthStr := strconv.Itoa(tblPostfixLength)
 		tableCount := len(plan.RouteTableIndexs)
 		for i := 0; i < tableCount; i++ {
 			buf := sqlparser.NewTrackedBuffer(nil)
@@ -701,7 +711,7 @@ func (r *Router) generateInsertSql(plan *Plan, stmt sqlparser.Statement) error {
 			nodeName := r.Nodes[nodeIndex]
 
 			buf.Fprintf("insert %v%s into %v", node.Comments, node.Ignore, node.Table)
-			fmt.Fprintf(buf, "_%04d", plan.RouteTableIndexs[i])
+			fmt.Fprintf(buf, "_%0" + tblPostfixLengthStr + "d", plan.RouteTableIndexs[i])
 			buf.Fprintf("%v %v%v",
 				node.Columns,
 				plan.Rows[tableIndex],
@@ -733,6 +743,9 @@ func (r *Router) generateUpdateSql(plan *Plan, stmt sqlparser.Statement) error {
 		nodeName := r.Nodes[0]
 		sqls[nodeName] = []string{buf.String()}
 	} else {
+		// tbl name format: tbl_name_xxxx
+		tblPostfixLength := r.GetRule(plan.Rule.DB, plan.Rule.Table).TableNamePostfixLength
+		tblPostfixLengthStr := strconv.Itoa(tblPostfixLength)
 		tableCount := len(plan.RouteTableIndexs)
 		for i := 0; i < tableCount; i++ {
 			buf := sqlparser.NewTrackedBuffer(nil)
@@ -740,7 +753,7 @@ func (r *Router) generateUpdateSql(plan *Plan, stmt sqlparser.Statement) error {
 				node.Comments,
 				node.Table,
 			)
-			fmt.Fprintf(buf, "_%04d", plan.RouteTableIndexs[i])
+			fmt.Fprintf(buf, "_%0" + tblPostfixLengthStr + "d", plan.RouteTableIndexs[i])
 			buf.Fprintf(" set %v%v%v%v",
 				node.Exprs,
 				node.Where,
@@ -776,6 +789,9 @@ func (r *Router) generateDeleteSql(plan *Plan, stmt sqlparser.Statement) error {
 		nodeName := r.Nodes[0]
 		sqls[nodeName] = []string{buf.String()}
 	} else {
+		// tbl name format: tbl_name_xxxx
+		tblPostfixLength := r.GetRule(plan.Rule.DB, plan.Rule.Table).TableNamePostfixLength
+		tblPostfixLengthStr := strconv.Itoa(tblPostfixLength)
 		tableCount := len(plan.RouteTableIndexs)
 		for i := 0; i < tableCount; i++ {
 			buf := sqlparser.NewTrackedBuffer(nil)
@@ -783,7 +799,7 @@ func (r *Router) generateDeleteSql(plan *Plan, stmt sqlparser.Statement) error {
 				node.Comments,
 				node.Table,
 			)
-			fmt.Fprintf(buf, "_%04d", plan.RouteTableIndexs[i])
+			fmt.Fprintf(buf, "_%0" + tblPostfixLengthStr + "d", plan.RouteTableIndexs[i])
 			buf.Fprintf("%v%v%v",
 				node.Where,
 				node.OrderBy,
@@ -818,6 +834,9 @@ func (r *Router) generateReplaceSql(plan *Plan, stmt sqlparser.Statement) error
 		nodeName := r.Nodes[0]
 		sqls[nodeName] = []string{buf.String()}
 	} else {
+		// tbl name format: tbl_name_xxxx
+		tblPostfixLength := r.GetRule(plan.Rule.DB, plan.Rule.Table).TableNamePostfixLength
+		tblPostfixLengthStr := strconv.Itoa(tblPostfixLength)
 		tableCount := len(plan.RouteTableIndexs)
 		for i := 0; i < tableCount; i++ {
 			tableIndex := plan.RouteTableIndexs[i]
@@ -829,7 +848,7 @@ func (r *Router) generateReplaceSql(plan *Plan, stmt sqlparser.Statement) error
 				node.Comments,
 				node.Table,
 			)
-			fmt.Fprintf(buf, "_%04d", plan.RouteTableIndexs[i])
+			fmt.Fprintf(buf, "_%0" + tblPostfixLengthStr + "d", plan.RouteTableIndexs[i])
 			buf.Fprintf("%v %v",
 				node.Columns,
 				plan.Rows[tableIndex],
@@ -861,6 +880,9 @@ func (r *Router) generateTruncateSql(plan *Plan, stmt sqlparser.Statement) error
 		nodeName := r.Nodes[0]
 		sqls[nodeName] = []string{buf.String()}
 	} else {
+		// tbl name format: tbl_name_xxxx
+		tblPostfixLength := r.GetRule(plan.Rule.DB, plan.Rule.Table).TableNamePostfixLength
+		tblPostfixLengthStr := strconv.Itoa(tblPostfixLength)
 		tableCount := len(plan.RouteTableIndexs)
 		for i := 0; i < tableCount; i++ {
 			buf := sqlparser.NewTrackedBuffer(nil)
@@ -869,7 +891,7 @@ func (r *Router) generateTruncateSql(plan *Plan, stmt sqlparser.Statement) error
 				node.TableOpt,
 				node.Table,
 			)
-			fmt.Fprintf(buf, "_%04d", plan.RouteTableIndexs[i])
+			fmt.Fprintf(buf, "_%0" + tblPostfixLengthStr + "d", plan.RouteTableIndexs[i])
 			tableIndex := plan.RouteTableIndexs[i]
 			nodeIndex := plan.Rule.TableToNode[tableIndex]
 			nodeName := r.Nodes[nodeIndex]
diff --git a/proxy/server/conn_preshard.go b/proxy/server/conn_preshard.go
index 5877e073..646ab9ba 100644
--- a/proxy/server/conn_preshard.go
+++ b/proxy/server/conn_preshard.go
@@ -25,6 +25,7 @@ import (
 	"github.com/flike/kingshard/mysql"
 	"github.com/flike/kingshard/proxy/router"
 	"github.com/flike/kingshard/sqlparser"
+	"strconv"
 )
 
 type ExecuteDB struct {
@@ -462,13 +463,16 @@ func (c *ClientConn) handleShowColumns(sql string, tokens []string,
 				}
 				showRouter := c.schema.rule
 				showRule := showRouter.GetRule(ruleDB, tableName)
+				// tbl name format: tbl_name_xxxx
+				tblPostfixLength := showRule.TableNamePostfixLength
+				tblPostfixLengthStr := strconv.Itoa(tblPostfixLength)
 				//this SHOW is sharding SQL
 				if showRule.Type != router.DefaultRuleType {
 					if 0 < len(showRule.SubTableIndexs) {
 						tableIndex := showRule.SubTableIndexs[0]
 						nodeIndex := showRule.TableToNode[tableIndex]
 						nodeName := showRule.Nodes[nodeIndex]
-						tokens[i+2] = fmt.Sprintf("%s_%04d", tableName, tableIndex)
+						tokens[i+2] = fmt.Sprintf("%s_%0" + tblPostfixLengthStr + "d", tableName, tableIndex)
 						executeDB.sql = strings.Join(tokens, " ")
 						executeDB.ExecNode = c.schema.nodes[nodeName]
 						return nil