Infection with pubic lice can be detected within 1-2 days after intercourse, and the pubic lice parasite can be transmitted to each other through sexual contact on the pubic hair, causing local itching. Because pubic lice reproduce quickly and can irritate the vaginal skin during crawling and egg laying, causing intense itching of the skin, patients can find lice in a short period of time. The disease is mainly sexually transmitted and patients should visit a hospital for further examination once they have severe itching symptoms after intercourse. Some patients can cause impetigo, folliculitis and other diseases after infection, and need to be treated symptomatically with sulfur ointment and other drugs as soon as possible. In addition, the couple should try to do a good job of cleaning the perineum before intercourse to prevent problems before they occur. For patients who have been infected with pubic lice, sexual intercourse should be avoided during treatment, and if cross-infection has resulted, both spouses need to be treated, and both undergarments need to be soaked in high temperature and washed and dried in the sun.