Duodenal lesions are some common diseases in gastroenterology, common congenital diseases, infections, tumors, trauma, etc., as follows:1. Congenital diseases: such as certain congenital malformations.2. Infections: gastroduodenal ulcers caused by Helicobacter pylori infections.3. Tumors: tumors include benign tumors and malignant tumors, and the incidence of duodenal malignant tumors is lower than that of the stomach and the large intestine, but there is a tendency to cancerous transformation.4, Trauma: direct injury to the stomach and duodenum caused by trauma, which can lead to intestinal rupture in severe cases.5, other diseases: if long-term use of non-steroidal anti-inflammatory drugs, drinking a lot of alcohol, which can lead to the destruction of the gastric mucosa, thus causing gastroduodenal ulcers, or a high degree of long-term nervous tension, which can cause excessive secretion of gastric acid, resulting in stress ulcers and so on, age and other diseases can cause gastroduodenal diseases. When the stomach and duodenum have localized lesions, in addition to medication under the guidance of a doctor, must pay attention to dietary regulation. Daily to eat warm, soft, light, easy to digest food, avoid cold, spicy and other stimulating food intake, small meals, avoid overeating, avoid alcohol, strong tea, coffee and other adverse stimuli, do not stay up all night, to ensure adequate sleep and good mood, to promote the recovery of the disease.