If the patient has vomited blood, attention must be paid to prevent aspiration. The patient should be monitored for changes in blood pressure, vital signs, heart rate, and the presence of black stool, and the vomiting of blood is a clear case of upper gastrointestinal bleeding. After the patient’s condition is stabilized, further improvement of electronic gastroscopy will be performed to clarify the cause of bleeding. If there is repeated vomiting of blood, vascular bleeding may be considered. Vascular hemorrhage is more dangerous, the bleeding volume is very large, and there is a risk of respiratory and cardiac arrest at any time.