Duodenal ulcers are very common digestive system disorders. It is mainly caused by Helicobacter pylori infection or drug injury or emergency injury. It often presents with localized volcano-like changes, mucosal rupture or erosion. However, the duodenum also needs to constantly receive food and needs to pay attention to diet. First, do not eat too much raw and cold food. Raw and cold food may stimulate the gastrointestinal tract, which is not conducive to digestion. Second, it is not recommended to eat spicy and stimulating food. For example, ginger, garlic, leeks, chili, its stimulating factors may lead to stomach pain. Third, it is not recommended to smoke and drink alcohol. Cigarettes and alcohol have a stimulating effect on the stomach itself, and in the case of duodenal ulcer will aggravate the damage. Fourth, it is not recommended to eat too hot food, too hot food will have damage to the duodenal mucosa. It is very beneficial to eat more food that helps digestion, more vitamins, and more fresh vegetables and fruits.