Patients with upper gastrointestinal bleeding may experience vomiting blood once the stomach bleeding reaches more than 200 mL. The occurrence of vomiting blood also indicates a significant amount of bleeding. Therefore, patients who experience vomiting blood need to actively seek medical attention as soon as possible at the gastroenterology department of a reputable hospital. If the condition permits, a thorough examination with an electronic gastroscope should be carried out promptly to determine the cause, location, and amount of the bleeding. Endoscopic hemostasis can also be performed at the same time. If necessary, oral or intravenous medications that suppress gastric acid secretion can be administered, along with other comprehensive treatments.