Less stool is considered to be caused by insufficient food intake, indigestion, intestinal entrapment, and intestinal tumors. If patients do not consume enough food every day, resulting in less food residue formed after digestion and absorption in the stomach and intestines, it will also lead to less stool. Patients suffering from indigestion have reduced digestive system function and slow peristalsis in the gastrointestinal tract. Food is not quickly excreted into the intestines after gastric digestion, resulting in the formation of less stool and less frequent bowel movements resulting in dry stools. Patients who have intestinal stasis have narrowed intestinal cavity due to twisting and squeezing of intestinal vessels, resulting in obstruction of fecal discharge, resulting in less stool, constipation, bloating, nausea, vomiting or blood in stool. In patients with tumors in the intestine, the blood circulation in the intestinal cavity is obstructed as the tumor grows larger and larger, and the intestinal cavity becomes narrower, resulting in obstruction of fecal discharge, which may lead to less stool, constipation, and bloating.