I can only say that most upper gastrointestinal bleeding can be treated. Common issues such as gastric and duodenal ulcers, complex ulcers, and bleeding caused by acute gastric mucosal lesions can be managed with intravenous or oral administration of proton pump inhibitors, such as omeprazole, lansoprazole, etc., combined with hemostatic drugs and dietary control, often achieving satisfactory therapeutic effects. Cases like bleeding from esophagogastric varices due to liver cirrhosis may require endoscopic sclerotherapy or banding, and sometimes surgery, but recurrent bleeding can occur. Bleeding caused by gastrointestinal tumors requires treatment of the primary disease and often has a poor prognosis. Additionally, bleeding from the gastroduodenal artery, which is severe and urgent, can be addressed with surgical intervention if treatments like endoscopic electrocoagulation are ineffective.