Search.us.com in Chrome! How can I remove it?

HELP!!!
My homepage has been replaced by search.us.com. When I find out it's not a reputable website so I try to delete it. After I reset Chrome or reinstall Chrome, it still here!!! Anyone can give me some useful advice to remove this? Thank you for your help!

It's obvious that this is a browser hijacker. It's not so easy to delete completely. I give you some tips to remove this. I hope it can work.
Open your browser and find manage add-ons. So you can set back your default homepage and search provider and remove search.us.com extensions.
Then you open control panel to uninstall it.

Maybe we should learn more things about computer so that I think we can protect our computers well. I hate encountering computer viruses. They are monsters.