Constipation can also stimulate the production of carcinogens in the intestine, increase the incidence of colon cancer and rectal cancer, and should be more vigilant. For the elderly, the more serious risk of constipation may be the complication of cardiovascular and cerebrovascular diseases. Old people often suffer from many chronic diseases, such as hypertension, arteriosclerosis, coronary heart disease, diabetes, hypothyroidism, etc. Elderly constipation because of sitting position during defecation or hole for a long time, coupled with pressure can appear giddy, lack of power, flustered, shortness of breath, sweating and other symptoms, even can cause defecate blackout, increased blood pressure, brain, can also induce angina pectoris, myocardial infarction and energy failure, this is the heaviest threat to the elderly, we should pay attention to reality. Therefore, patients with cardiovascular and cerebrovascular diseases should be paid more attention. Always keep your bowels open and avoid overexertion to prevent accidents. Also caused by constipation after manure dry embedded plug have intestinal obstruction, fecal ulcer, frequent urination and fecal incontinence, also occasionally idiopathic megacolon and cause disease, such as giant shape colon to reverse this needs to be immediately to the hospital, the diagnosis and treatment in time. All of these complications may be caused by constipation and should be taken care of by doctors, patients and family members, and prevention and treatment should be strengthened.