It has been clinically found that the proportion of constipation is higher in the elderly, which is two to three times higher than that of young adults. The reasons why the elderly are prone to constipation are closely related to the physiological characteristics of the elderly. The reasons why the elderly are prone to constipation 1, due to the loss of teeth in the elderly, the chewing of food has an obvious impact, the taste buds on the surface of the tongue are prone to atrophy, the taste cells are reduced, the salty taste threshold is elevated, and the secretion of saliva is reduced, which directly affects the digestion of food. All of these make them prefer to take in soft food without residue, coupled with eating too little, not enough water supplementation, resulting in low fiber content in the feces and easy to form constipation. 2, the elderly body organs function with aging and decline, with the decline in digestive ability, the daily amount of food and drink is gradually reduced, easy to cause intestinal feces capacity is insufficient. 3, the elderly esophageal peristalsis and gastrointestinal emptying rate are reduced, so that the stool through the intestinal tract for a longer period of time, increasing intestinal absorption of water, so that the stool becomes hard, so often occurs constipation. 4, the elderly due to disease long-term bedridden, as well as with a variety of potential systemic diseases, and long-term use of certain drugs, such as sedative sleeping, antihypertensive drugs, etc., may affect intestinal peristalsis, the formation of constipation.