Pubic lice infection, also known as pubic lice disease, is a parasitic disease caused by pubic lice biting the skin near the pubic area and anus. Untreated pubic lice may cause localized intense itching sensation, spread through sexual contact, and affect the patient’s life and rest and so on. Pubic lice disease is caused by the human body infected with pubic lice, usually found on the vulva and perianal body hair, but also in the beard, eyebrows, armpit hair and hair and other parts of the parasites. Patients mainly show symptoms such as intense itching, red rash and greenish ecchymosis at the infected area. If patients do not take active treatment, it may affect their own life and rest, and may also lead to the spread of the disease and infect their family members. Pubic lice disease generally can not be self-cured, patients can use topical drugs under the guidance of the doctor, such as 0.2% phenothrin emulsion, 25% benzyl benzoate emulsion or 10% sulfur ointment for local treatment, during the treatment period, patients should keep the affected area locally clean, change and wash the underpants, bed linen, bath towels and other personal items and high-temperature cleaning, if necessary, can be removed hair, prohibit sexual intercourse, to avoid the proliferation of the disease, and so on.