Burning sensation in the abdomen at night may be caused by improper diet, chronic gastritis, peptic ulcer and other factors. 1. Improper diet: due to eating too much too sweet, too acidic, cold or spicy stimulating food or drink. It may induce a large amount of gastric acid secretion, causing stimulation of the gastric mucosa, thus causing a burning sensation in the abdomen. 2. Chronic gastritis: due to the gastric mucosa in the long-term inflammation stimulation, coupled with the usual diet irregularities, overeating, etc., is likely to cause gastrointestinal digestion and absorption dysfunction, excessive secretion of gastric acid, gastric mucosal stimulation resulting in a feeling of hot, usually accompanied by abdominal distension, nausea, belching and other discomforts. 3. Peptic ulcer: usually manifested as gastric ulcer and duodenal ulcer. Due to the destruction of the protective barrier of the gastric mucosa and duodenal mucosa, gastric acid secretion increases, causing irritation to the gastric mucosa and duodenal mucosa and triggering a burning sensation, which is usually accompanied by abdominal distension, acid reflux and other symptoms. In addition, the burning sensation in the abdomen at night may also be related to reflux esophagitis and other factors. It is recommended that patients with burning sensation in the abdomen at night go to the hospital in a timely manner to identify the cause of the disease and carry out targeted treatment under the guidance of the doctor, so as to avoid delaying the condition.