The common causes of low stool volume are as follows: First, dietary factors: mainly due to chronic underfeeding or eating a liquid diet, which results in less fiber content in the food group and less fecal slag formed in the stools, causing a decrease in the phenomenon of defecation; Second, constipation: mainly due to intestinal ganglionic conduction blockage, as well as intestinal phytoneurological dysfunction, resulting in a marked deceleration of peristalsis or slow peristalsis, which results in a long retention time of stools and excessive water absorption, causing dry stools and prolonged defecation cycle; Third, inflammatory diseases of the intestine, such as Crohn’s disease, ulcerative ulcers, and other inflammatory diseases of the intestine. Peristalsis is slow, so that the retention time of the stool is too long, and too much water is absorbed, causing dryness and prolongation of the defecation cycle; C. Inflammatory diseases of the intestinal tract, such as Crohn’s disease, ulcerative colitis, as well as intestinal polyps, intestinal malignant tumors and so on: all of them can cause intestinal congestion, edema, and incomplete intestinal obstruction, which will make it difficult for the bowel to be discharged, resulting in a decrease in the number of bowel movement phenomenon.