The first thing to consider is a diet-related intestinal flora imbalance, especially the consumption of garlic, green onions and other foods. If it is a simple fart, not accompanied by abdominal pain, abdominal distension, diarrhea and other manifestations, this situation we generally recommend that patients pay attention to the observation of abdominal symptoms and signs of change, if necessary, can be used to regulate the intestinal flora of the whole intestines of the treatment. However, this kind of people must be highly alert to the possibility of intestinal tumors, if a patient appears to have recurrent foul-smelling farts, but abdominal pain, especially to the periumbilical pain, emaciation, loss of appetite, accompanied by diarrhea, this kind of patients must be recommended to further check the electronic colonoscopy to exclude the possibility of intestinal malignant tumors. Therefore, the repeated occurrence of foul-smelling farts, the first consideration is still an intestinal-related diseases, for such patients we will recommend that the patient further check electronic colonoscopy, abdominal ct, tumor markers, blood tests and so on.