What I can you use to cure my really bad athletes foot my foot is so bad with itching.

Many things. What have you already tried? Over the counter creams, powders, lotions, sprays? Are you keeping your feet as dry as possible? If OTC meds aren't working you may need a prescription cream or oral antifungal medication from your doctor.Don't wear the same pair of shoes every day, wear a new pair of socks every day, wash towels and socks in hot water to avoid reinfection, don't walk barefoot in public.