Ringworm of the thigh roots, also known as ringworm, is treated in three main points: antifungal medication (application of medication is the main focus), topical care, and prevention of cross-infection. As a type of fungal infection, the most important thing is antifungal treatment, and topical application of medication is sufficient for ringworm, a superficial and limited skin infection. Because the skin there is thin and tender, choose a less irritating ointment, such as Butenafine rub or Ketoconazole ointment, once a night, and stick to it for two weeks, most of the rash can subside, and because the fungus is stubborn, it is recommended to use it again for 2 weeks to consolidate the course. If the disease is more serious, the effect is not satisfactory or itself combined with other fungal infections (such as onychomycosis, tinea capitis, etc.), you can add oral itraconazole capsules (1 capsule once a day at noon and evening, for a course of 2 weeks). If you sweat a lot, you should insist on taking a bath every day and disinfecting your clothes and bath tubs by ironing them more often. Although the contagiousness is different, it is still important to live in isolation from people who do not have jock itch, and especially to keep toiletries separate. The treatment of ringworm is common and relatively standardized, and the combination of prevention and care can effectively prevent recurrence and get better results.