Gastric ulcer can cause bleeding, a serious complication, which means that the gastric ulcer itself is also more serious, once the bleeding patient will clinically show vomiting blood and black stool, clinical observation will have changes in vital signs, such as a drop in blood pressure, increased heart rate, the patient is accompanied by panic and palpitations, if the bleeding continues to increase, the patient may even be in shock or life threatening. Once a gastric ulcer with bleeding occurs, go to the hospital immediately. Doctors need to perform emergency gastroscopy, which can determine what causes the bleeding on the one hand, and for some serious bleeding, endoscopic symptomatic treatment can be performed, while gastroscopy for gastric ulcer can also determine whether it is a benign or malignant ulcer. Therefore, bleeding complications due to gastric ulcers are one of the more critical diseases in clinical practice and should be seen immediately in a hospital.