Bloating, burping and belching may be caused by dietary factors, functional dyspepsia, chronic gastritis, peptic ulcer and other reasons. 1. Dietary factors: eating a lot of gas-producing foods, such as soy products, onions, potatoes, sweet potatoes, etc., the digestion of these foods in the stomach produces a large amount of gas causing bloating, hiccups, belching. 2. Functional dyspepsia: insufficient gastric power, prolonged food emptying time through abnormal fermentation gas production increases, causing abdominal distension, hiccups, belching. 3. Chronic gastritis: inflammation and erosion of the gastric mucosa, affecting the digestion of food, resulting in bloating, hiccups, belching, acid reflux and other symptoms. 4. Peptic ulcer: including gastric ulcers and duodenal ulcers, because the gastric mucosa has an ulcerated surface with weak digestive capacity, which can lead to bloating, burping, belching, acid reflux, heartburn and other symptoms. Bloating hiccups belching, there are many other causes, if the persistence can not be relieved, it is recommended to consult a doctor in a timely manner to identify the cause of early treatment.