Bloating and indigestion may be caused by functional dyspepsia, gastroduodenal diseases, hepatobiliary and pancreatic diseases. 1. Functional dyspepsia: mostly related to gastrointestinal dyskinesia, Helicobacter pylori infection, anxiety and depression, mainly manifested as postprandial fullness, distension, belching (hiccups), nausea, etc., which can be accompanied by insomnia, anxiety, inattentiveness and other mental symptoms. 2. Gastroduodenal diseases: gastritis, gastric ulcer, duodenal ulcer and other diseases can cause gastrointestinal mucosal damage, abnormal gastrointestinal tract dynamics, bloating, abdominal pain, vomiting and other dyspeptic manifestations. 3. Hepatobiliary and pancreatic diseases: chronic hepatitis, cirrhosis, biliary stones, chronic pancreatitis, etc., can cause bloating and indigestion. Bloating and indigestion may also have other causes, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.