After gastrointestinal bleeding, the patient should be kept in a recumbent position to rest and ensure that the airway is clear to avoid aspiration of blood due to vomiting. Close monitoring of the patient's vital signs, such as heart rate, blood pressure, and breathing, is necessary. It is important to actively replenish blood volume, correct hypovolemic shock, and administer medications for hemostasis. Endoscopic hemostasis with a gastroscope can also be used. If conservative drug treatment is not effective, surgical treatment may be considered. Emergency treatment is essential after gastrointestinal bleeding, as delays can be life-threatening.