Most of the white worms in children’s buttocks belong to pinworms, which are parasitic infections. When found with white worms should be given timely deworming treatment, such as oral intestinal worm clearing tablets, at the same time can be applied locally white mercury ointment or 10% zinc oxide ointment coated with dry skin around the anus, or can also be a little pinworm ointment squeezed into the anus, has the effect of antiseptic and itching. At the same time, pay attention to weekday hygiene habits, pay attention to toys, clothes, tableware, etc. often wash and disinfect, in the sun, wash your hands with soap in a timely manner before meals and after the toilet, cultivate good hygiene habits, wash and dry underwear and bedding and so on.