A large white easily peeled skin on the patient’s feet, if there is no obvious discomfort, is considered to be dead skin formation or blisters due to wear and tear. However, if it is a regular peeling skin, or is accompanied by itching, foot odor and other performance, you need to consider related to a number of diseases. A, physiological factors: 1, dead skin: easy to tear off the white skin may be the dead skin shed on the patient’s feet, usually refers to the keratin on the feet, usually related to the change of seasons, how much walking, shoe tightness and other factors. Generally no special treatment is needed, no pain, keep the skin locally clean and dry can be, while pay attention to temporarily reduce daily walking and replace the appropriate shoes; 2, blisters: due to long-distance hiking, mountaineering or marathon and other sports, resulting in frequent friction between the foot and the shoe, the local tissue is contused, blisters appear, this situation will have obvious pain, to rest, the skin torn off, with clean rinse with clean water, and then apply iodophor externally to disinfect. Second, pathological factors: 1, exfoliative keratolytic disease: is a kind of palmoplantar area good superficial exfoliative skin disease of the keratin layer. Usually manifested as early as pinpoint size lesions, gradually expanding around, white membranous, can be naturally peeled off or torn off, the skin under the membrane is normal, generally no inflammatory changes, summer can be aggravated, and accompanied by local sweating symptoms. Usually do not need to be treated, topical application of low concentration of keratin peeling agent has a certain effect. If mild bleeding occurs after tearing off the foot skin, routine daily disinfection with iodophor or alcohol may be performed; 2. Tinea pedis: When a patient develops tinea pedis, a large patch of white skin may also appear on the foot that can be torn off. Tinea pedis usually occurs in the plantar or interdigital areas of the feet and is mainly associated with ringworm infection, which can manifest as itching, blisters, erosions, and the appearance of scaly patches, which may cause the patient to develop peelable foot skin on the feet. It can usually be treated with topical medication, which can be applied wet with 1:8000 potassium permanganate solution, followed by topical oil or powder, and then switched to creams or ointments such as terbinafine hydrochloride after the skin dries.