If the patient is a habitual constipation, only defecate once every 2-3 days, and the shape of the stool is very hard and dry, the patient also has great difficulty in defecating, after the corresponding examination such as colonoscopy has also ruled out some diseases of the colon, such as colitis, colon polyps and even colon tumors. For this kind of habitual constipation, the patient should be warned to carry out a healthy lifestyle, drink more water, exercise more and eat foods with high fiber to improve the bowel habit. If the patient is unable to pass stool and has weight loss or even blood in the stool, it is necessary to consider whether the patient has other organic lesions, and colonoscopy is very necessary to exclude some serious lesions such as colon polyps and colon tumors. Because colon tumors may lead to intestinal obstruction, the patient will not come out of the stool; elderly people are prone to frequent failure to stool, and should be dealt with in a timely manner, otherwise stool will easily form fecal stones will also lead to intestinal obstruction, the results will also be more serious. So constipation for too long must come to the hospital to see a doctor, to prevent serious problems.