Lice on the body is considered to be head lice, pubic lice, etc., and there is no fastest way, mainly with medication. 1. Head lice: head lice mainly invade the scalp, you should try to shave the hair as short as possible, you can choose pyrethroids, paracetamol and other drugs to kill lice, if these two drugs are not effective, you can choose benzyl alcohol and ivermectin, malathion and so on. You can also use a close comb to comb your hair every day to remove head lice eggs, and disinfect clothing and bedding, and place them in a closed area for about two weeks. 2. Pubic lice: pubic lice disease is usually parasitic in the pubic hair area, but may also be in the eyebrow, eyelashes, armpit hair, etc. You can remove the pubic hair, and then apply tincture of Bacitracin or methylphenidate emulsion, in addition to pay attention to the disinfection of underwear and towels, bedding, etc., and can not have sex during the treatment period. There are other types of lice, such as body lice, you should go to the hospital to choose the appropriate treatment according to the type of lice, all of the above drugs should be used in accordance with the doctor’s instructions, not blindly use their own.