The feeling of burning in the stomach may be caused by diet, chronic gastritis, gastric ulcer and other reasons. 1. Diet: Eating too much spicy and stimulating food, such as eating chili peppers and drinking alcohol, causes irritation to the gastric mucosa, resulting in a burning sensation in the stomach. 2. Chronic gastritis: chronic gastritis lacks specific symptoms, and the severity of symptoms is not consistent with the degree of gastric mucosal lesions. Most patients are often asymptomatic or have varying degrees of dyspeptic symptoms, such as epigastric pain, loss of appetite, fullness after meals, acid reflux, nausea and so on. 3. Gastric ulcer: the protective barrier of the gastric mucosa is destroyed, the gastric mucosa has an ulcerated surface, the gastric acid secretion stimulates the ulcerated surface lesions, and the feeling of burning in the stomach is always accompanied by nausea, vomiting, abdominal distension, and so on. The feeling of burning in the stomach is also seen in other causes, if the symptoms continue to be unrelieved, it is recommended to consult a doctor under the guidance of a clear cause and targeted treatment, do not self-medication, so as not to delay the condition.