Corns on the feet may be related to long-term localized pressure and friction, foot deformity. 1. Long-term pressure and friction: wearing ill-fitting shoes for a long time, standing or walking for a long time, wearing high-heeled shoes for a long time, etc., so that the weight of the feet increases, resulting in excessive pressure or friction on the local skin of the feet, which can easily cause corns on the feet. 2. Foot deformity: foot due to congenital developmental abnormalities, or certain diseases, trauma, deformities caused by surgery, may also cause severe local wear and tear, resulting in excessive proliferation of the stratum corneum. Foot long corns, should be timely by the doctor’s guidance for symptomatic treatment, to prevent the impact of foot health, and even affect the patient’s normal walking.