Bloating after meals lasts for a month is considered to be functional dyspepsia, chronic gastritis, cirrhosis of the liver and so on. 1. Functional dyspepsia: patients with functional dyspepsia will have weakened gastrointestinal function, resulting in early satiety, bloating after meals, belching (hiccups), loss of appetite and other symptoms. 2. Chronic gastritis: it is a chronic inflammatory disease of the gastric mucosa caused by a variety of etiological factors. Chronic gastritis can affect gastric motility, leading to slow gastric emptying, causing food retention in the stomach, resulting in postprandial fullness, which can also be accompanied by abdominal pain, nausea, loss of appetite and other symptoms. 3. Cirrhosis: Cirrhosis can lead to digestive dysfunction, causing postprandial bloating; and when cirrhosis induces ascites, the presence of ascites in the abdominal cavity can lead to abdominal bloating. If the bloating after meal lasts for one month, it is recommended that the patient should go to the hospital in time to clarify the cause of the disease and take active treatment.