Feeling bloated after eating is mostly related to gastrointestinal dysfunction, because gastrointestinal dysfunction causes not only a decrease in its operational efficiency, but also breaks the balance of its original flora. If the food in the gastrointestinal cavity is not decomposed and transformed in time, it will have metabolic reactions with a variety of gas-producing bacteria such as Enterobacteriaceae and Clostridium perfringens, generating a large amount of gaseous substances. The gaseous substances cannot be emptied in a timely manner due to the slowing down of peristaltic movement, resulting in local stagnation and causing symptoms such as gastric distention, belching, early satiety, acid reflux and nausea. However, the possibility of other digestive diseases such as Helicobacter pylori infection, intestinal dysbiosis and superficial gastritis cannot be ruled out, and the degree and duration of adverse reactions are more obvious and long-lasting than the former.