Belching, farting, and stomach rumbling are less likely to be stomach cancer and are mostly caused by gastrointestinal and hepatobiliary diseases. Common diseases that cause these symptoms include chronic gastritis, chronic atrophic gastritis, peptic ulcer, reflux esophagitis, as well as cholecystitis and gallbladder stones. It may also be caused by indigestion due to irregular diet, eating too fast or eating foods that produce too much gas, causing gastrointestinal tract dysfunction and flora imbalance. Gastric cancer usually occurs in people over 50 years old, more men than women, and there are no obvious symptoms in the early stage, and some patients may have upper gastrointestinal symptoms such as nausea, vomiting, fullness after eating and belching. Therefore, if patients only have occasional belching, farting and stomach rumbling symptoms, there is generally no need to be overly worried, but if they occur repeatedly, they should be alerted and it is recommended to consult the gastroenterology department of the hospital in time to exclude the possibility of tumor.