Constipation can be divided into organic constipation and functional constipation. The etiology of functional constipation is not yet completely clear, and it is considered to be related to factors such as lifestyle and colonic motility disorders; organic constipation can be caused by intestinal obstruction, hemorrhoids, hypothyroidism and other diseases. 1. Functional constipation: the etiology is not yet completely clear, and its occurrence is related to the lack of fiber in food or insufficient amount of food, work stress, mental factors, colonic motility dysfunction, pelvic muscle tone, abuse of laxatives, old age and infirmity and other factors. 2. Organic constipation: organic lesions of the intestinal tract can cause narrowing of the intestinal lumen, obstruction leading to constipation; hypothyroidism can appear low metabolic state leading to slow intestinal peristalsis, resulting in constipation; rectal, anal lesions, such as rectal, anal fissure and so on can also cause constipation. Patients with constipation are advised to go to the hospital if necessary, so that the doctor can make a judgment and clarify the cause of the problem.