Constipation in the elderly is mainly due to the fact that with the increase of age, the amount of food and activity in the elderly is significantly reduced, the secretion of digestive juices in the gastrointestinal tract is reduced, the tone and peristalsis of the intestinal canal is weakened, the abdominal and pelvic floor muscles are weak, the internal and external anal sphincter is weakened, the gastrocolic reflex is weakened, and the sensitivity of the rectum is reduced, and these combined factors cause the food to stay in the intestine for too long and the water is excessively absorbed, resulting in dry stools. In addition, elderly people often lose their bowel reflexes due to dementia or mental depression, leading to constipation. In addition, poor lifestyle habits of the elderly, such as too fine a diet, low food intake, and lack of good bowel habits, can also lead to increased constipation.