One of the reasons for the development of duodenal bulb ulcers is due to excessive gastric acid damage to the gastric mucosa, so in the selection of fruits, you should avoid too acidic and too sweet or easy to cause excessive secretion of gastric acid fruits, these fruits are not recommended to choose. Instead, it should be recommended to eat fruits with a relatively calm flavor, such as apples, bananas, dragon fruits, tangerines, oranges, etc., which have a relatively calm flavor and can synthesize gastric acid, avoiding excessive secretion of gastric acid, which may lead to aggravation of gastric mucous membrane and duodenal bulb mucous membrane damage and aggravation of duodenal bulb ulcers. If you choose especially sweet and sour fruits, such as hawthorn, pineapple, etc., they are more stimulating, on the one hand, can induce the production of more gastric acid, on the other hand, too much gastric acid will also aggravate the symptoms of duodenal bulb ulcer, so the duodenal bulb ulcer patients try to use mild fruits.