Intra-anal warts are a common sexually transmitted disease. The warts are caused by the infection of human papilloma virus (HPV) due to sexual misconduct, and are characterized by single or scattered reddish or white papules, which can be papillate or cauliflower-shaped, with burning pain, discomfort during sexual intercourse, and itchiness. Intra-anal warts occur mostly in homosexuals, if one of them is infected with human papilloma virus and the other has unprotected sex with him, especially male anal sex, it is easy to lead to intra-anal warts. When warts occur, it is usually necessary to seek medical attention together with the sexual partner, and under the guidance of the doctor to actively treat the warts, and to avoid sexual intercourse during the treatment period.