Ok I've been playing violin for 7 years, but I don't know what's wrong with the bow?

It keeps making a scratching sound. It's annoying. I think in jazz band someone touched the heir when I told them not to.

its been 7 yrs, come on, get a new bow

Get the bow restrung. Make sure you have plenty of resin to keep the bow in good condition as well as "relaxing" the bow when not in use.