Tinea corporis is a skin disease that affects the femoral area and sometimes the perineum, pubic mons, perianal area, buttocks, and scrotal folds. It itches intensely, and due to scratching, patients can develop dermatitis, lichenified changes, or secondary infections. Prevention: 1. It is one of the conditions for the onset of ringworm that the pubic area is often damp. You can use a powder such as commercially available talcum powder after bathing. The underwear you wear should not be too tight or too thick, but ventilated and breathable. 2, most of the ringworm may be infected by the ringworm itself, therefore, it is important to actively eradicate ringworm and other ringworm. 3, Clean yourself and do not have inappropriate sexual relations with others. Do not use other people’s underwear, underwear and toiletries. 4.Change your underwear often and keep your vulva clean and wash and dry your clothes often. 5.Reduce sweating and promote the evaporation effect of the root of the femur. Try to keep the perineum dry and wear loose fitting underwear, not too tight. 6.If you have grey nails, goose paws or ringworm, you should actively treat them to prevent them from being infected by hand in the pubic area. 7. Summer is rainy and humid, and because modern people are more and more likely to wear tight pants, jeans, nylon underwear and pantyhose, more and more people are infected with ringworm. The doctor urges that the rainy season is a good time for ringworm and reminds people to take precautions.