Corns and warts can be distinguished from each other by their etiology, site of onset, and clinical manifestations. 1. Etiology: corns are due to long-term friction and extrusion of the foot skin, gradually forming hard conical keratosis. Warts are benign growths on the surface of the skin caused by human papilloma virus infection. 2. The onset of the site: corns often occur in the soles of the feet, between the toes, the back of the toes and the lateral part of the little toe and other long-term friction and compression parts. Warts can occur in all parts of the body, such as common warts to the hands of the common warts, metatarsal warts in the feet of the pressure parts, flat warts often occur in the face, back of the hands, forearms and other parts of the body. 3. Clinical manifestations: Chicken eye is mainly manifested in the soles of the feet local appearance of a clear border, yellowish or dark yellow, conical keratin embolism, the size of a soybean, the surface is smooth, and the pressure is conscious of the pain. The main feature of warts is the appearance of wart-like superfluous organisms on the skin, such as common warts typical performance for the soybean size or larger gray-brown, brown papules, can be papillomatous hyperplasia, flat warts for the slightly elevated, smooth surface of the flat papules. When the patient’s skin abnormal growths, should be timely consultation, by the doctor to determine, if necessary, to give targeted treatment.