According to domestic literature, the incidence of chronic constipation in adults in China is 4%-6%, and 22% for those over 60 years of age; in developed countries, the incidence of constipation is higher, 14.7% in the United States and 11.6% in Singapore in 2000. Constipation is a symptom and a symptom-based disease, manifested as difficulty in defecation, reduced frequency of defecation, stiff stools, and a sense of incomplete defecation. In life, many people think that constipation is just difficult to defecate, but in fact, it is very harmful and is related to the development of many diseases. Long-term constipation causes great harm to the body: 1, causing anal fissures: because the stool is dry and hard, stay in the rectum for too long, want to excrete when not easy to discharge. In order to relieve the discomfort of the lower abdomen, people will be in the defecation will take the effort, so that the dry stool in the discharge of damage to the anal flap, dentate line near the tissue, anal canal and perianal skin, causing anal fissures, anal fissures after the pain will be afraid of defecation, further aggravating constipation, resulting in a vicious circle. 2, other perianal diseases: long stay in the intestinal feces, its pathogenic bacteria easily cause anal sinus infection and the formation of anal sinusitis, and easily lead to perianal abscess, anal fistula, etc. 3, gastrointestinal dysfunction: constipation, stiff stool, defecation difficulties, so that the stool in the rectum for a long time to retain, excessive absorption of harmful substances resulting in gastrointestinal nerve dysfunction. 4, induce the attack of cardiovascular disease: patients suffering from cardiovascular disease with constipation, such as excessive bowel movements, resulting in an increase in blood pressure, easily induced cerebral hemorrhage, myocardial infarction and other conditions. 5.Increase the chance of colon cancer: Clinical research found that the incidence of colon cancer in constipated patients is more than four times that of normal people, which is attributed to excrement staying in the colon for a long time, and the carcinogenic substances in feces acting on the colon for a long time. 6, induce psychological diseases: long-term defecation difficulties, incomplete defecation, etc. make patients in the anxiety, anxiety and difficult to vent pessimistic emotions, which is precisely the precursor of cancer. Constipation is not directly fatal, but it can indirectly threaten human life. If you experience constipation, you should seek medical attention to find the factors that cause constipation and treat it in time.