If children have small white worms in their anus, most of them are caused by pinworm infection. For pinworm infection in children, the following measures can be used: 1. ensure the local cleanliness of the vulva, parents need to wash the child around the anus every day, it will greatly reduce the chances of pinworm infection. 2. children can be given the application of Baibei external wash, you can apply the Chinese medicine Baibei decoction external wash, can inhibit the itching and other symptoms caused by pinworms. 3. children can be given the application of worming medicine, for example, children can be given the application of For example, children can be treated with intestinal wormer, and the symptoms of pinworm infection in children will be significantly relieved in about 1-2 weeks of treatment. In addition, when small white worms appear in the anus of children, parents should promptly observe at night to see what changes in the efficacy of the treatment, and also need to change the underwear for children diligently.