In general, the recurrence of duodenal bulb ulcer after bleeding gastroscopy to stop bleeding is considered to be caused by the recurrence of Helicobacter pylori infection, improper diet of the patient, the use of non-steroidal anti-inflammatory drugs such as celecoxib, and other reasons. 1. Re-occurrence of Helicobacter pylori infection: After the eradication of Helicobacter pylori, new infections can occur again, causing local inflammation, edema and even erosion of the gastrointestinal mucosa, bleeding, leading to duodenal bulbous ulcer bleeding after gastroscopy bleeding. 2. Improper diet:Eating spicy stimulation, cold and hard, high salt and high fat food. Such as melon seeds, peanuts, iced drinks, alcohol, strong tea, coffee and spicy hot food, stimulate the duodenal bulb mucosa, causing edema and inflammation, resulting in mucosal erosion, bleeding. The bleeding site may be a secondary bleeding that occurs at the site of hemostasis under gastroscopy or a new site of bleeding that occurs. 3. The use of non-steroidal anti-inflammatory drugs: such as ibuprofen, diclofenac sodium, celecoxib, etc., may cause re-injury to the gastric mucosa that has been hemostatized, causing mucosal congestion, edema, erosion, bleeding. Duodenal bulb ulcer bleeding gastroscopy after bleeding recurrence, it is recommended to consult a doctor to clarify the diagnosis, targeted treatment.