Plantar foot skin rubbing is not clean may be tinea pedis, chronic lichen simplex dermatitis, callus and other diseases lead to. 1. Tinea pedis: the hyperkeratosis type of tinea pedis can cause hyperkeratosis of the plantar skin, resulting in hypertrophy of the plantar skin, which can be accompanied by itching, and the thickened plantar skin may not be easy to remove cleanly. Compound benzoic acid ointment can be used to soften the keratinization, antifungal drugs such as terbinafine hydrochloride cream and other treatments. 2. Chronic simple mossy dermatitis: itching in the early stage, scratching and friction lead to the appearance of corn grain to mung bean sized flat papules, gradually increased, fused into a piece over time, resulting in hypertrophy of the soles of the skin, hypertrophy of the soles of the skin to a certain degree of difficulty in removing. 3. Callus: commonly known as callus, long-term friction and pressure caused by the thickening of the skin stratum corneum, occurring in the palm of the foot, manifested as yellow or waxy yellow, localized thickening of the plaque. Generally no treatment is needed, but there are cases where the cuticle is too thick and hard, and it is difficult to remove it cleanly by hand rubbing, so it can be removed by knife peeling or treated with external keratolytic agents such as Vitamin A acid ointment. The sole of the foot skin rubbing not clean situation may also be caused by other diseases, it is recommended to go to the regular hospital to clarify the cause of the disease, standardized treatment.