Perineal warts are benign skin growths caused by human papillomavirus (HPV) infection. When the human nail (toenail) edge of the skin mucosa is broken, and the HPV virus invades the broken area and infects the basal layer of the skin epidermis, it can cause perinail warts. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. The people with weak autoimmune system, such as AIDS patients, received an organ transplant, malignant lymphoma or chronic lymphocytic leukemia patients, contact with the human papilloma virus is also easier than others to infect the periwinkle. The actual fact is that you should pay attention to personal hygiene and environmental sanitation, develop good habits, wash your hands frequently, change your clothes frequently, and keep your indoor environment sanitary and air circulation to avoid virus breeding. Avoid sharing household items with people infected with human papillomavirus, and disinfect personal items regularly, such as towels and washbasins. People with weakened immune system should strengthen physical exercise to enhance physical fitness, which can reduce the risk of periapical warts.