Burping without eating much is mostly considered to be caused by functional dyspepsia, because when this condition occurs in patients, it causes the gastrointestinal tract tissues to operate with insufficient power and an imbalance in the ratio of bacteria. When food enters the digestive tract and cannot be decomposed and absorbed in a timely manner, it reacts with gas-producing bacteria such as Enterobacteriaceae and methanogens in a deep fermentation reaction and produces large amounts of gaseous substances. The gas in the cavity of the gastrointestinal tract will regurgitate into the thoracic cavity and esophagus and cause continuous stimulation of the diaphragm, resulting in frequent hiccups, increased belching, acid reflux, vomiting and other symptoms. However, other clinical conditions such as diaphragmatic cysts, irritable bowel syndrome and Helicobacter pylori infection can also trigger such adverse reactions. If the adverse reactions persist or worsen, it is necessary to go to the hospital as soon as possible to avoid missing the best time for treatment.