If there are roundworms in the anus, if they are already exposed outside the anus, you can use your hand or a clip to clip out the roundworms; if the roundworms are not exposed outside the anus, you can discharge the roundworms out of the anus through the action of defecation. If there are roundworms in the anus, it means that there are also roundworms in the body, and you have to use deworming medicine to beat the worms. The clinical choice is often intestinal wormer, the medical generic name is albendazole tablets, adults can take 2 tablets orally at night before bedtime, usually 1 dose is enough; children can choose 1 tablet / time, eat every day before bedtime, eat 2 days in a row. Intestinal parasite infections should be regularly wormed, once every 1-3 months, and usually focus on prevention, do not eat unhygienic, raw and cold food.