Farting is not a typical symptom of bowel cancer, it may be caused by indigestion, constipation and so on. 1. Indigestion: It may be due to overly oily diet or eating cold food, resulting in the gastrointestinal tract not being able to fully digest and absorb the food. The fermentation process of food in the intestines produces odorous gas, which leads to constant farting. 2. Constipation: Indigestion may cause the gastrointestinal tract to slow down, and food residue and feces will stay in the gastrointestinal tract for a long time. It may mix with the intestinal flora and fermentation, resulting in the phenomenon of constant farting. 3. Bowel cancer: Bowel cancer patients often show changes in bowel habit and character, blood in stool, abdominal pain, abdominal distension, abdominal mass and so on. If the symptoms of constant farting do not improve for a long time, it is recommended to go to regular hospitals in time for relevant examinations, and after clarifying the causes of the disease, target treatment is carried out under the advice of doctors.