The difference between corns and plantar warts on the soles of the feet mainly lies in their etiology, performance and so on. 1. Etiology: The corns on the soles of the feet are mainly related to the excessive proliferation of the stratum corneum caused by long-term pressure, friction and other mechanical stimuli. Metatarsal warts are benign excrescences of the skin and mucous membranes caused by human papilloma virus infection. 2. Performance (1) corns: corns often involve the lateral side of the prominent little toe, heel and other stress areas, manifested as a yellowish or dark yellow conical corns, smooth surface, may be slightly protruding from the skin surface. The surface is smooth and may be slightly protruding from the skin surface. The pain may be self-conscious when standing or walking. (2) metatarsal warts: can occur in any part of the soles of the feet. Early manifestation for small shiny papules. With the development of the disease, the formation of yellowish or tawny callus-like plaque or flat papules, rough surface, clear boundaries. Surrounded by a slightly elevated keratin ring, small black spots formed by capillary rupture and bleeding can be seen after removing the keratin layer. If there is any discomfort, it is recommended to seek prompt medical attention for diagnosis and treatment.