Constipation clinically means constipation. Constipation may be caused by dietary factors, lack of exercise, anal fissure, intestinal obstruction and other reasons. 1. Dietary factors: due to improper diet, less water or usually do not pay attention to the intake of dietary fiber, often eat spicy stimulating food. This leads to insufficient intestinal power, so constipation occurs. 2. Lack of exercise: If you are sedentary for a long time at work or study. This will lead to slower gastrointestinal peristalsis, affecting the contraction of the muscles that assist defecation, and constipation may occur. 3. Anal fissure: patients with anal fissure will experience severe anal pain during defecation, so patients are afraid of defecation and control the frequency of defecation. This leads to the accumulation of feces for too long, which causes constipation. 4. Intestinal obstruction: Due to the local narrowing or compression of the intestines, intestinal obstruction occurs and defecation is not smooth, so it will lead to constipation. It is recommended that patients adjust their diet and exercise appropriately to promote normal peristalsis of the stomach and intestines. If the constipation can not be relieved for a long time, you should go to the hospital in time, under the guidance of the doctor for standardized treatment.