diff --git a/application.go b/application.go
index 3270015..14ef40f 100644
--- a/application.go
+++ b/application.go
@@ -475,6 +475,7 @@ func SetDB(appIns *Application) {
 func SetMysqlDB(appIns *Application, config Map) {
 
 	appIns.Db.Type = "mysql"
+	appIns.Db.Prefix = config.GetString("prefix")
 	appIns.SetConnectDB(func(err ...*Error) (master, slave *sql.DB) {
 		//master数据库配置
 		query := config.GetString("user") + ":" + config.GetString("password") +
@@ -503,6 +504,7 @@ func SetMysqlDB(appIns *Application, config Map) {
 func SetSqliteDB(appIns *Application, config Map) {
 
 	appIns.Db.Type = "sqlite"
+	appIns.Db.Prefix = config.GetString("prefix")
 	appIns.SetConnectDB(func(err ...*Error) (master, slave *sql.DB) {
 		db, e := sql.Open("sqlite3", config.GetString("path"))
 		if e != nil && len(err) != 0 {
diff --git a/cache/cache_db.go b/cache/cache_db.go
index 4fbe234..3c9b983 100644
--- a/cache/cache_db.go
+++ b/cache/cache_db.go
@@ -9,6 +9,7 @@ import (
 )
 
 type HoTimeDBInterface interface {
+	GetPrefix() string
 	Query(query string, args ...interface{}) []Map
 	Exec(query string, args ...interface{}) (sql.Result, *Error)
 	Get(table string, qu ...interface{}) Map
@@ -51,13 +52,13 @@ func (that *CacheDb) initDbTable() {
 			return
 		}
 		dbName := dbNames[0].GetString("DATABASE()")
-		res := that.Db.Query("SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='" + dbName + "' AND TABLE_NAME='cached'")
+		res := that.Db.Query("SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='" + dbName + "' AND TABLE_NAME='" + that.Db.GetPrefix() + "cached'")
 		if len(res) != 0 {
 			that.isInit = true
 			return
 		}
 
-		_, e := that.Db.Exec("CREATE TABLE `cached` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `ckey` varchar(60) DEFAULT NULL, `cvalue` varchar(2000) DEFAULT NULL, `time` bigint(20) DEFAULT NULL, `endtime` bigint(20) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=198740 DEFAULT CHARSET=utf8")
+		_, e := that.Db.Exec("CREATE TABLE `" + that.Db.GetPrefix() + "cached` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `ckey` varchar(60) DEFAULT NULL, `cvalue` varchar(2000) DEFAULT NULL, `time` bigint(20) DEFAULT NULL, `endtime` bigint(20) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=198740 DEFAULT CHARSET=utf8")
 		if e.GetError() == nil {
 			that.isInit = true
 		}
@@ -65,13 +66,13 @@ func (that *CacheDb) initDbTable() {
 	}
 
 	if that.Db.GetType() == "sqlite" {
-		res := that.Db.Query(`select * from sqlite_master where type = 'table' and name = 'cached'`)
+		res := that.Db.Query(`select * from sqlite_master where type = 'table' and name = '` + that.Db.GetPrefix() + `cached'`)
 
 		if len(res) != 0 {
 			that.isInit = true
 			return
 		}
-		_, e := that.Db.Exec(`CREATE TABLE "cached" (
+		_, e := that.Db.Exec(`CREATE TABLE "` + that.Db.GetPrefix() + `cached" (
 			"id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
 				"ckey" TEXT(60),
 				"cvalue" TEXT(2000),
diff --git a/db/db.go b/db/db.go
index e6de390..dcc257c 100644
--- a/db/db.go
+++ b/db/db.go
@@ -18,6 +18,7 @@ type HoTimeDB struct {
 	ContextBase
 	*cache.HoTimeCache
 	Type        string
+	Prefix      string
 	LastQuery   string
 	LastData    []interface{}
 	ConnectFunc func(err ...*Error) (*sql.DB, *sql.DB)
@@ -438,7 +439,7 @@ func (that *HoTimeDB) Select(table string, qu ...interface{}) []Map {
 		query += " *"
 	}
 
-	query += " FROM " + table
+	query += " FROM " + that.Prefix + table
 
 	if join {
 		for k, v := range qu[0].(Map) {
@@ -515,6 +516,9 @@ func (that *HoTimeDB) Get(table string, qu ...interface{}) Map {
 	}
 	return data[0]
 }
+func (that *HoTimeDB) GetPrefix() string {
+	return that.Prefix
+}
 
 // Count 计数
 func (that *HoTimeDB) Count(table string, qu ...interface{}) int {
@@ -853,7 +857,7 @@ func (that *HoTimeDB) cond(tag string, data Map) (string, []interface{}) {
 // Update 更新数据
 func (that *HoTimeDB) Update(table string, data Map, where Map) int64 {
 
-	query := "UPDATE " + table + " SET "
+	query := "UPDATE " + that.Prefix + table + " SET "
 	//UPDATE Person SET Address = 'Zhongshan 23', City = 'Nanjing' WHERE LastName = 'Wilson'
 	qs := make([]interface{}, 0)
 	tp := len(data)
@@ -898,7 +902,7 @@ func (that *HoTimeDB) Update(table string, data Map, where Map) int64 {
 
 func (that *HoTimeDB) Delete(table string, data map[string]interface{}) int64 {
 
-	query := "DELETE FROM " + table + " "
+	query := "DELETE FROM " + that.Prefix + table + " "
 
 	temp, resWhere := that.where(data)
 	query += temp
@@ -941,7 +945,7 @@ func (that *HoTimeDB) Insert(table string, data map[string]interface{}) int64 {
 		}
 
 	}
-	query := "INSERT INTO " + table + queryString + "VALUES" + valueString
+	query := "INSERT INTO " + that.Prefix + table + queryString + "VALUES" + valueString
 
 	res, err := that.Exec(query, values...)