Surgical excision after anesthesia has a therapeutic effect on corns. Corns are most common in adult females and are caused by thickening of the stratum corneum after prolonged pressure and friction, often involving areas such as the outer part of the little toe, the back of the toe, and the heel of the foot. The surface of corns is yellowish corns, which are smooth and painful when standing or walking because the tips of the corns press on the nerves in the dermis. When corns appear, they can first be applied with corns cream and salicylic acid ointment, but care should be taken to protect the normal surrounding skin. If conservative treatment does not work, surgery to remove the corns under anesthesia can be considered. In addition, cryotherapy and laser therapy are now being gradually promoted. Care should be taken to avoid friction and extrusion and wear proper shoes.