The occurrence of onychomycosis can be prevented by not trimming the toenails too short and by making the lateral edge of the toenail longer than the periungual wall. Patients should not trim their toenails too short when trimming their toenails, as trimming them too short may cause the toenails to grow into the nail grooves, leading to a greater chance of developing an onychomycosis. Patients should trim their toenails so that the lateral edge of the toenail is longer than the periungual wall of the nail, which can prevent the toenail from growing into the flesh, leading to onychomycosis. If the patient suffers from a mild inguinitis, you can use iodine povidone in the inguinitis part of the anti-inflammatory, if you suffer from a serious purulent inguinitis, you should consult a doctor for treatment in a timely manner, usually do not wear too tight shoes, pay attention to hygiene, do not arbitrarily pull out the periungual next to the barbed wire, after washing the feet, you can apply some skin care creams.