Most patients with upper gastrointestinal bleeding do not feel pain, but a few causes of upper gastrointestinal bleeding can lead to pain. Such as peptic ulcer, acute erosive hemorrhagic gastritis, gastric cancer and so on. 1. Peptic ulcer: the mucosal surface of the digestive tract is damaged, which can cause bleeding and pain after stimulation by food and digestive juices. 2. Acute erosive-hemorrhagic gastritis: if upper gastrointestinal bleeding is caused by acute erosive-hemorrhagic gastritis, pain will also occur. Acute erosive-hemorrhagic gastritis will lead to increased secretion of gastric acid, which will stimulate the erosive wounds and cause pain in the stomach. 3. Gastric cancer: Gastric cancer is mostly ulcerative lesions, and ulcers will lead to abdominal pain, which is clinically manifested as abdominal pain. If stomach cancer develops to a certain degree and causes upper gastrointestinal bleeding, it will also lead to pain symptoms. If upper gastrointestinal bleeding occurs, it is recommended to do relevant examination in time to clarify the diagnosis and give appropriate treatment. Daily diet should be diversified, with more fruits and vegetables rich in vitamins.