Rattling stomach and farting a lot are usually not bowel cancer. Early stage of bowel cancer usually has no obvious symptoms, and the rattling stomach and farting a lot may be caused by Irritable Bowel Syndrome (IBS) and Chronic Gastroenteritis (CGI). Early stage of bowel cancer usually has no obvious abnormality, there may be symptoms like abdominal discomfort, fecal occult blood, etc. In the later stage, there will be abdominal pain, increased frequency of bowel movement and other undesirable conditions. Irritable bowel syndrome, which is also a disorder in the intestines, is usually accompanied by abnormal symptoms such as abdominal pain and gas, and bowel sounds are more active when there is bleeding in the digestive tract. Chronic gastroenteritis may present with symptoms such as vague pain in the upper abdomen, diarrhea, and also recurrent gas. When serious symptoms occur, it is recommended that the patient go to the gastroenterology department of the hospital in a timely manner, and under the guidance of the doctor for the next step in the examination and treatment. Avoid eating greasy and spicy foods such as barbecue, hot pot and fried skewers in normal times.