Human papillomavirus is a general term for a group of viruses, of which more than 100 subtypes are known. Some people infected with human papillomavirus have no symptoms, while others infected with HPV virus will cause different diseases according to the subtype of the infected virus. The common ones are as follows: I. Common warts, manifested as bean-sized pimples with a rough, papillomatous surface. Second, plantar warts. It occurs on the foot, not higher than the skin, the skin pattern is incomplete, and there are bleeding spots and black spots on the surface. Third, flat warts. It is characterized by flat papules, round or polygonal. Fourth, warts. Wart-like growths appear in the genital area and are a sexually transmitted disease.