Misoprostol is an abortion inducing drug, generally also used as a protective drug for the gastrointestinal mucosa, mainly for abortion in pregnant women within 112 days after menopause, but it needs to be used in combination with Mifepristone, and also for the treatment of gastric ulcer and duodenal ulcer. However, it should be noted that patients with IUDs or ectopic pregnancies should not use Misoprostol for abortion and need to undergo relevant tests first. Misoprostol also needs to be ruled out before it is used to treat gastric ulcers, which may be similar to gastrointestinal ulcers, so malignant diseases need to be ruled out before the drug can be used. When used for abortion, it should be taken on an empty stomach. When used for the treatment of gastrointestinal ulcers, it can be taken with meals or at bedtime to better reduce the risk of diarrhea.