Tinea cruris is a disease caused by fungal infection, which can be completely cured. The fungus attaches to the surface skin at the root of the thighs. Commonly used antifungal creams applied long-term can completely kill the fungus. The treatment course has to be long, at least one to two months or more. During the treatment period, it is important to avoid cross-infection, refrain from using public baths or swimming, and for patients with athlete's foot, try not to wash socks and underwear together. Additionally, it is important to sunbathe and sterilize, preferably not keeping small animals at home, and if the work or living environment is humid and prone to sweating, one must bathe more frequently and keep the area ventilated and dry.