Gastric distension, belching has been a year may be related to dyspepsia, chronic gastritis, peptic ulcer, reflux esophagitis and so on, not necessarily malignant. 1. Dyspepsia: gastrointestinal dysfunction, gastric tolerance to food diastolic function decline caused by dyspepsia, patients are prone to gastric distension, belching has been a year and postprandial fullness, epigastric pain and other uncomfortable symptoms, not necessarily malignancy. 2. Chronic gastritis: the disease is related to HP infection, long-term diet and so on. The patient mainly manifests a vague pain in the upper abdomen, loss of appetite, postprandial fullness, acid reflux, belching, etc., can also be manifested as gastric distension, belching has been a year, does not belong to the malignant changes. 3. Peptic ulcer: mainly related to HP infection, excessive gastric acid secretion, long-term dietary inappropriateness and so on. Typical symptoms of patients include epigastric pain, acid reflux, belching, heartburn, nausea and vomiting, etc. Some patients may have vague distension and belching for a year, which is not malignant. 4. Reflux esophagitis: the disease can also cause some patients with gastric distension, belching has been a year, but also easy to be accompanied by a burning sensation behind the sternum, chest pain and other symptoms of discomfort. Reflux esophagitis is not malignant, mainly related to the decline of anti-reflux function, esophageal clearance ability to reduce other factors. In addition to the above diseases, those who have stomach distension and belching for one year should also be alerted to malignant diseases such as gastric cancer. It is recommended that the patient should consult a doctor for examination in time, so as to clarify the cause of the disease and then follow the doctor’s instructions for treatment.