The main manifestations of constipation are reduced frequency of defecation and difficulty in defecation. 1. Decrease in the number of bowel movements: many patients have fewer than 3 bowel movements per week, and in severe cases, the number of bowel movements can be as long as 2 to 4 weeks before a bowel movement. 2. Difficulty in defecation: Some patients may have difficulty in defecation, and the time of defecation can be more than 30 minutes, or defecate many times a day, but it is difficult to discharge, and the feces is hard like goat feces, and the number of feces is very small. 3. Abdominal pain and bloating: when the patient is constipated, the feces will be difficult to be discharged and will be accumulated in the intestines, and the excessive feces will lead to abdominal bloating and abdominal pain, and the symptoms will be more obvious especially after eating. When the elderly over exert themselves to defecate, it can lead to changes in coronary arteries and cerebral blood flow. Fainting may occur during defecation due to decreased cerebral blood flow. Angina pectoris and myocardial infarction may occur in people with insufficient coronary blood supply. Those with hypertension may cause cerebrovascular accidents, as well as rupture of aneurysms or ventricular aneurysms, dislodgement of thrombus from the heart’s appendages, cardiac arrhythmias and even sudden death. Due to the low tension of the muscular layer of the colon, megacolon can occur. When straining to defecate, elevated intra-abdominal pressure can cause or aggravate hemorrhoids, and injury to the anal canal during forced defecation can cause other perianal diseases such as anal fissure. Fecal impaction can produce intestinal obstruction, fecal ulcer, urinary retention and fecal incontinence. When the patient occurs constipation, it is best to go to the hospital as soon as possible for treatment to avoid the above symptoms.