Gastric ulcer without vomiting blood but with black stools, consider the gastric ulcer bleeding rate is slow, the bleeding volume is small, this time only black stools, may not appear vomiting blood. 15%~25% of patients with gastric ulcer can be complicated by gastrointestinal bleeding. The clinical manifestation of gastrointestinal bleeding depends on the amount of bleeding, bleeding speed, bleeding site and other factors. If the bleeding volume is small, there may be no clinical manifestation, and only positive in fecal occult blood test; if the bleeding volume is 50~100ml, then obvious black stool can be observed; if the bleeding volume is more than 200ml, and the bleeding site is near the pylorus, and the bleeding volume is faster, the patient may have the clinical manifestation of vomiting blood. In short, whether gastric ulcer patients have black stools or vomit blood, should be analyzed specifically in the light of the above situation.