Low stool is mainly due to the following three reasons: First, dietary factors, such as long-term food intake less, and the substance of the food is mainly liquid diet, then less stool residue, so the discharge of stool is also less; Second, constipation, due to the intestinal ganglion conduction block, and intestinal disorders of the vegetative nervous system, resulting in slow intestinal peristalsis, stool accumulation in the intestine for too long The stool will be dry and the interval time will be longer; 3. Inflammatory diseases of the intestinal tract and tumor diseases of the intestinal tract can lead to the slowing down of peristalsis and complete or incomplete obstruction of the intestinal cavity, thus causing the symptoms of reduced stool discharge.