Duodenal bulbar ulcers can be divided into active, scarring and healing phases, with the active phase being the most severe. The active stage of the ulcer, the beginning stage of the disease, has inflammation and edema evident at the edge of the ulcer, and tissue repair has not yet occurred. It may have active bleeding and the appearance of blood clots. When active bleeding occurs, the patient may vomit blood, relieve black stools, and so on, and hemorrhagic shock occurs in serious cases, so it is very dangerous and the most serious stage. At this time, timely treatment is needed to stop bleeding, analgesia, protection of the gastrointestinal mucosa and other treatments, and those with severe anemia also need timely blood transfusion treatment. To the scarring stage, the ulcer gradually shrinks, the inflammation subsides, and there is regenerative epithelium appearing. In the healing stage, the ulcer has completely recovered and requires attention in diet and life. At the same time, it is also necessary to check whether there is a combination of Helicobacter pylori infection, to clarify the cause of the ulcer, to avoid recurrence. In addition to the need for gastroscopy to clarify the stage of the ulcer, you should also look for the cause of the disease and actively treat it. Avoid recurrence.