Foot pustule, also known as tinea pedis in medical terms, is a skin disease caused by fungal infection. Clinically, it can be divided into maceration and desquamation type, vesicular type, and hyperkeratotic type. Based on your description of peeling skin on feet, it seems to be related to the hyperkeratotic type. In terms of treatment, it primarily involves using an external antifungal cream as the main method, soaking the foot in warm water at night to soften the horny layer, and then applying salt acid betamethasone dipropionate ointment externally twice a day. After four weeks of continuous use, you can apply urea cream or recombinant human keratinocyte growth factor hydrogel at noon to prevent peeling.