Belching for six months is usually considered to be related to factors such as bad living habits, improper diet and digestive system diseases. 1. bad habits: for example, long-term bed rest, long-term work, less exercise, will affect the gastric emptying, will be manifested as belching symptoms; or mental stress leads to excessive anxiety, depression, anger, will lead to digestive dysfunction, will appear belching performance. 2. Improper diet: for example, in the past six months, like to eat more easy to produce gas food, commonly found in potatoes, sweet potatoes, soy products, etc., or in the past six months often drink carbonated beverages, can also lead to belching phenomenon. 3. Digestive system diseases: such as chronic gastritis, gastric ulcer, gastroesophageal reflux, esophageal and gastric tumors and other diseases, can also cause belching symptoms. Belching for six months may also have other factors, it is recommended to go to the hospital as soon as possible, under the guidance of the doctor to take appropriate treatment measures.