Gastric bleeding may be life-threatening if not stopped. Gastric bleeding is generally more common in gastric ulcer or gastric cancer, and usually the amount of bleeding is small enough to be diagnosed by gastroscopy. If the bleeding is relatively large, such as Duchenne bleeding, and obvious arterial bleeding can be seen, emergency gastroscopy is needed in this case. If the bleeding can be stopped under gastroscopy or with hemostatic drugs, the patient’s prognosis is still good, and blood transfusion is needed when necessary, because blood transfusion is needed for resuscitation when the bleeding is large and fast. If the bleeding cannot be stopped by conservative treatment or gastroscopy, emergency surgery is needed to remove the bleeding lesion and open the abdominal cavity for investigation if necessary, and if the bleeding is heavy or multiple, the entire stomach may need to be removed.