Difficulty in defecation is related to constipation, slow bowel movement, colitis, colon tumors and other diseases. Constipated people have a relatively long time to form feces in the intestine, so the nature is relatively dry, dry feces in the passage, there will be a smooth and prolonged phenomenon, so in the bowel movement will be difficult to defecate. Some people have difficulty defecating because their intestinal peristalsis is too slow and they don’t like to exercise and often eat fine foods, so the contents of the intestines cannot be pushed quickly due to slow peristalsis. Patients with colitis have difficulty in defecation because the mucosa of the colon is stimulated by inflammation and the function is damaged, and the transportation of feces will be affected. When colon tumor enters advanced stage, the lumen of colon will be relatively narrow, and when feces passes through the tumor area, it will not only cause pain and intestinal spasm, but also have difficulty in defecation.