Upper gastrointestinal bleeding is one of the common complications of peptic ulcers. If gastric ulcers cause vomiting blood, it often indicates that the bleeding is not minor and the condition is generally severe. It is usually considered that when about 250-300mL of blood accumulates in the stomach, vomiting blood may occur. Clinically, if vomiting blood occurs, it is firstly necessary to promptly hospitalize for treatment, including establishing venous access, nutritional support, and hemostatic treatment. Proton pump inhibitors or somatostatin analogs are commonly used. Additionally, if the bleeding does not stop, endoscopic treatment can be performed, such as spraying hemostatic drugs, electrocoagulation, or mechanical hemostasis. It is also necessary to monitor the patient's vital signs. If repeated bleeding occurs, a comprehensive treatment plan may be needed.