Pubic lice are mainly transmitted through sexual contact, but may also be caused by factors such as out-of-home hotels. Pubic lice are mainly parasitic on pubic hair and hair around the anus, bite the nearby skin, sucking human blood and injecting toxic saliva, causing local itching symptoms as well as inflammatory reactions, which are infectious parasitic diseases, mainly through sexual contact for transmission. Pubic lice are found to shave all the pubic hair and burn used underwear and bed sheets. Keep the area clean and dry, and then apply topical sulfur ointment or tincture of Bebe, which is usually used continuously for more than 10 days. Underwear is washed and then disinfected by boiling, or exposed to sunlight, and also the treatment of sexual partners. You should pay attention to keep the local clean, dry, diligent cleaning and replacement. Usually also pay attention to sexual hygiene, eliminate high-risk sexual behavior, fixed sexual partners, to avoid the occurrence of sexually transmitted diseases.