Constipation farts may be caused by organic lesions, such as: intestinal tumors, intestinal polyps, hypothyroidism, etc., but it may also be due to functional causes, such as: irritable bowel syndrome. 1.Organic lesions (1) Intestinal tumors: after suffering from intestinal tumors, when the tumors are relatively large, it will also cause the feces can not be discharged, causing constipation and farting symptoms (2) Intestinal polyps: For those who suffer from intestinal polyps, if the polyps are relatively large, it may also lead to obstruction of fecal discharge, and feces gathered in the intestines for a long time will produce excessive gas, which will be manifested as constipation and farting symptoms. (3) Hypothyroidism: For those who have hypothyroidism, it may lead to gastrointestinal insufficiency and constipation, but some patients may also have fart symptoms. 2. Functional causes: due to the influence of diet, exercise, emotion, psychology and other aspects, there may be irritable bowel syndrome, so that the feces in the long term stay too long, fermentation, produce more gas, resulting in farting, constipation symptoms. There are more causes of constipation and farting, it is recommended to consult a doctor in time to clarify the cause of the disease under the guidance of the doctor, and treat the cause of the disease.