Frequent belching, farting and stomach rumbling are not necessarily precursors of stomach cancer, but may also be due to gastrointestinal and hepatobiliary diseases. Belching, farting and stomach rumbling are often caused by irregular diet, eating too fast or eating too much gas-prone food, resulting in gastrointestinal tract dysfunction and dysbiosis, leading to indigestion. Gastric cancer is more common in people over 50 years old, more in men than women, mostly caused by diet structure change, work pressure increase and H. pylori infection. Some people have upper gastrointestinal symptoms such as nausea, vomiting, fullness after eating, belching, etc.; in the middle and late stage, they show symptoms such as emaciation, anemia, black stools, and also gastrointestinal bleeding. If it is not stomach cancer, you can take oral medication to improve intestinal function and adjust flora, and eat less cold and spicy food to reduce the discomfort symptoms. If the diagnosis of stomach cancer is confirmed after examination, you need to cooperate with doctors for chemotherapy and surgery.