Constipation in the elderly refers to a decrease in the number of bowel movements, as well as difficulty in defecation and dry stools. Normal people have 1 to 2 bowel movements per day or 1 bowel movement in 2 to 3 days, while constipated patients have less than 2 bowel movements per week, and have strenuous bowel movements with hard and low volume of feces. Constipation is a common symptom among the elderly, and about 1/3 of them suffer from constipation, which seriously affects the quality of life of the elderly. The main manifestations of constipation are reduced frequency of defecation and difficulty in defecation, with many patients having less than 2 bowel movements per week, or in severe cases, only one bowel movement in 2-4 weeks. Some patients may have difficulty in defecation, which may take up to 30 minutes or more, or they may have several bowel movements per day, but the stool is difficult to pass, and the stool is hard and lamb-like, and the quantity is very small. In addition, there is abdominal distension, lack of appetite, and abdominal pain before defecation caused by improper administration of laxatives. On physical examination, there are intestinal tabs in the lower left abdomen that store feces, and there are fecal lumps on anal examination. Excessive forceful defecation in the elderly can lead to changes in coronary artery and cerebral blood flow. Fainting may occur during defecation due to the decrease in cerebral blood flow. Angina pectoris and myocardial infarction may occur in those with insufficient coronary artery blood supply. Hypertension may cause cerebrovascular accidents, as well as rupture of aneurysms or ventricular aneurysms, dislodgement of heart appendage thrombi, arrhythmias and even sudden death. Due to low tone of the colonic muscle layer, megacolon can occur. When using force to defecate, increased intra-abdominal pressure can cause or aggravate hemorrhoids, and damage to the anal canal during forced defecation can cause other perianal diseases such as anal fissures. Intestinal obstruction, fecal ulcers, urinary retention and fecal incontinence can occur after fecal impaction.