Bowel cancer patients do not necessarily have a raised abdomen. Bowel cancer is commonly found in colon cancer and rectal cancer. Early stage of bowel cancer usually has no obvious symptoms, but with the development of the disease, patients may suffer from abdominal pain, pus and blood in stools, etc. In some patients, lumps can be touched in the abdomen, and the disease continues to develop, which may result in low-grade fever, emaciation, malaise, anemia, cessation of defecation and ascites, etc. If the disease continues to develop, a large amount of ascites may also result in a bulging abdomen. If the disease continues to develop, a large amount of ascites may also lead to a bulge in the abdomen. Bowel cancer cannot be diagnosed solely on the basis of whether there is a bulge in the abdomen. Patients should improve the comprehensive judgment of tumor marker examination, laboratory examination, imaging examination, colonoscopy and pathological biopsy. Patients with raised abdomen suspecting bowel cancer should actively consult the doctor to find out the cause and standardize the treatment, and do not use medication by themselves.