How can i save domain name about to expire without web site?

canceled web site want to save domain name for future use

You don't need a website to keep the domain name.

Your domain name is registered with a domain name registration company. You pay the registration company the renewal fee.

If you don't know who your registration company is, go to http://www.whois.net and search your domain name. It will give you the name of the registrar.