Pubic lice are primarily transmitted through sexual contact and are a sexually transmitted disease (STD), which has been categorized as a sexually transmitted disease (STD) in our country. Often this patient will have a history of high-risk sex, or have multiple sexual partners to lead to the emergence of pubic lice. The treatment of pubic lice suggests shaving all the pubic hair, applying iodine to the area of pubic hair, and using the medication continuously for 5-7 days, the symptoms will improve, and the purpose of the cure is achieved. During the treatment period, you should not have sex, as it may be infected to your sexual partner, which will lead to the appearance of parasites on the pubic hair of your partner, and the eggs will be laid. Then cross-infection, and then coitus infected to the woman, in the clinic will appear again in the symptoms of vulvar itching. So this is a vicious circle, must remember to never have intercourse before cure.