Symptoms of mild upper gastrointestinal bleeding mainly include dizziness, fatigue, poor appetite, etc., and there may also be cases of passing black stools. Once a patient experiences black stools accompanied by symptoms such as dizziness and fatigue, upper gastrointestinal bleeding should be considered. It is advisable to visit the gastroenterology department of a reputable hospital as soon as possible to undergo a gastroscopy to promptly determine the cause of the condition. Depending on the different causes, appropriate and active treatment measures should be taken. Additionally, endoscopic hemostasis treatment can also be considered. Patients with mild upper gastrointestinal bleeding should also be extra cautious, as delayed treatment may lead to the possibility of severe upper gastrointestinal bleeding.