Tinea pedis refers to tinea pedis, the corresponding condition will lead to localized ulceration, clinical application of hydrogen peroxide is not recommended for cleaning, mainly because it does not help much in the control of the disease. Ringworm of the foot is mainly caused by fungal infection, after infection will cause foot blisters and itching symptoms, poor control will lead to localized ulceration, and will be accompanied by obvious odor. It is not recommended to use hydrogen peroxide to clean the feet, as the main function of hydrogen peroxide is to control anaerobic infections, and it does not have a clear therapeutic effect on the fungus of tinea pedis. Severe athlete’s foot, has been poorly controlled, and accompanied by obvious ulceration, seriously affecting the daily life of the situation, can be applied topical terbinafine ointment, clotrimazole cream local treatment. It is recommended to consult a doctor for observation and standardized treatment under the guidance of the clinician after diagnosis of the condition, to avoid delaying the condition.