diff --git a/options.go b/options.go
index a5705cc..a4720ae 100644
--- a/options.go
+++ b/options.go
@@ -5,7 +5,7 @@ type clientOptions struct {
 	Mysql         *MysqlOptions
 	Sqlite        *SqliteOptions
 	Prefix        string // 表名前缀，`Article` 的表名应该是 `it_articles`
-	SingularTable bool // 使用单数表名，启用该选项，此时，`Article` 的表名应该是 `it_article`
+	SingularTable bool   // 使用单数表名，启用该选项，此时，`Article` 的表名应该是 `it_article`
 }
 
 type MysqlOptions struct {
@@ -38,18 +38,27 @@ func SetMysql(user, password, host, database string, port int) Option {
 			Database: database,
 			Password: password,
 		}
+		if o.Mysql.Port == 0 {
+			o.Mysql.Port = 3306
+		}
 	}
 }
 
+// 使用sqlite数据库
 func SetSqlite(dbPath string) Option {
 	return func(o *clientOptions) {
 		o.Db = "sqlite"
 		o.Sqlite = &SqliteOptions{
 			DbPath: dbPath,
 		}
+		if o.Sqlite.DbPath == "" {
+			o.Sqlite.DbPath = "sqlite.db"
+		}
 	}
 }
 
+
+// 表名前缀
 func SetTablePrefix(perfix string) Option {
 	return func(o *clientOptions) {
 		o.Prefix = perfix