Most of the burning sensation in the stomach is due to acid reflux stomach acid secretion caused by excessive burning in the stomach, commonly found in psychosomatic factors, gastroesophageal reflux disease, chronic gastritis, peptic ulcer and so on. 1. Psychological factors: such as excessive stress, nervousness, anxiety, etc., can cause increased secretion of gastric acid, thus causing a burning sensation in the stomach. 2. Gastroesophageal reflux disease (GERD): a chronic disease in which the contents of the stomach and duodenum reflux into the esophagus, resulting in a series of symptoms. The main manifestations are heartburn, reflux, chest pain, epigastric burning sensation, belching, hoarseness, dysphagia and other symptoms. It can also cause a burning sensation in the stomach. 3. Chronic gastritis: refers to chronic inflammatory lesions of the gastric mucosa. Mainly manifested as epigastric discomfort, fullness, burning sensation, loss of appetite, acid reflux, nausea, belching and other symptoms. It can also cause a burning sensation in the stomach. 4. Peptic ulcer: refers to ulcers occurring in the stomach and duodenum. The main manifestations are regular epigastric pain, abdominal distension, belching, acid reflux, nausea, vomiting and other symptoms. It can also cause a burning sensation in the stomach. There are many other causes of burning sensation in the stomach, which should be taken seriously, and timely consultation should be made to identify the cause of the disease and follow the medical advice for further treatment and therapy.