The long dead skin on the feet is actually due to a large amount of cuticle shedding on the soles of the feet or toe seam area. Excessive friction, eczema or infection and other reasons can lead to cuticle shedding and long dead skin. 1, excessive friction: suddenly increase the amount of exercise or shoes uncomfortable feet can produce too much friction, which leads to excessive skin keratinization, after a long period of squeezing stimulation can form a block of keratinization off the phenomenon, commonly known as long dead skin. Can be relieved by replacing comfortable shoes, can also be used locally salicylic acid preparations for dead skin peeling; 2, eczema: eczema is an inflammatory skin disease caused by a variety of factors, external factors including food such as fish and shrimp, beef and mutton, internal factors are mainly chronic infectious lesions such as chronic cholecystitis, tonsillitis, blood circulation disorders, etc.. It is often manifested as pinpoint to corn-sized papules and papules on an erythematous base, and in severe cases, small blisters may appear, often fusing into patches with unclear boundaries, and the papules around the lesions gradually thinning out, often causing the keratin layer to shed and form dead skin after scratching; 3. Infection: Dead skin can also be produced when the feet are infected by fungi, and the common disease is the hyperkeratotic type of tinea pedis, which is clinically characterized by furfuraceous scales with hyperkeratosis as the main It can be characterized by the presence of dead skin on the feet. The skin at the lesions is visibly rough, keratinous, dry, and flaky, and the lesions are prone to cracking, bleeding, and pain in winter. The lesions can also spread to the back of the feet, mostly in patients who like to wear impermeable shoes, and if left untreated can cause infections in other areas, such as ringworm of the hands, nail, and femur. The dead skin on the feet can be caused by a variety of reasons. If the symptoms do not improve after the above mentioned medication, it is recommended to go to the hospital for examination and treatment under the guidance of a doctor.