Flatulence of liver cancer may be due to indigestion, ascites, tumor enlargement pressing surrounding organs and so on. It is necessary to clarify the cause of disease and improve it through gastrointestinal peristalsis drugs, diuretics and surgical resection of tumor. 1. Indigestion: if patients with liver cancer have flatulence due to weakening of gastrointestinal function, they can take gastric motility drugs, such as domperidone and mosapride, to accelerate gastrointestinal peristalsis. And in the diet need to eat easy to digest food, reduce fat and cholesterol intake. 2. Ascites: patients with advanced stage of liver cancer are prone to ascites, which may lead to flatulence, and need to be given diuretics in time to relieve ascites, such as furosemide, spironolactone and so on. 3. Tumor enlargement and compression of surrounding organs: if the bloating is caused by tumor compression, tumor resection, interventional surgery and other treatments can be carried out to reduce the volume of the tumor and relieve the symptoms of bloating. Liver cancer patients who have flatulence need to consult doctor in time, improve relevant examination to clarify the cause of the disease, and carry out treatment in time to relieve the symptoms of flatulence. The above drugs need to be used in a standardized way under the guidance of doctors.