Although constipation is a symptom of a variety of diseases that often occur, the current understanding of it is still limited to poor defecation or difficult defecation, knowing its harmfulness but not its cause, so the treatment for it can only be a simple one pass. In fact, modern medicine will reduce the frequency of defecation, without the use of laxatives, every 3 ~ 4 d or longer time defecation 1, or stool volume and dry hard, some such as sheep feces, and often have difficulty defecating feeling, or combined with a long defecation time, rectal distension, or a sense of incomplete defecation are collectively called constipation. Constipation according to its location can be divided into slow transmission type constipation, exit obstruction type constipation, etc., therefore, the correct understanding of constipation is particularly important. To complete a normal defecation process is inseparable from the formation, discharge and control of stool in three steps: firstly, the food residues absorbed by the digestive tract are transformed into fecal masses, which form sufficient volume of stool in the rectum to reach the rectum at a normal speed through the gastrointestinal tract in time to produce the urge to defecate and cause the defecation reflex; during defecation, the pelvic floor muscles coordinate their activities to complete defecation, which includes the nervous system and muscle activity (smooth muscle) The joint participation of the nervous system and muscle activity (smooth muscle). The occurrence of constipation is related to many factors such as physiological, psychological and social factors. If you simply use diarrhea instead of pass, it will certainly cause laxative-dependent colon, long-term use of drugs or health products containing anthraquinone preparations such as rhubarb, senna, aloe vera, etc., can also cause the evils of colon melanosis, the world gastrointestinal organization will be the first line of dietary fiber preparations will be the first choice of treatment drugs, is to change the condition of constipation through a reasonable dietary structure, the right amount of fiber intake, good habits, however It is also effective only for mild constipation or psychological constipation. Patients with moderate or severe constipation often have anxiety or even depression and other psychological factors or disorders, and should be treated with cognitive therapy, eliminating tension and then with effective treatment methods to be effective. Whether Chinese medicine or Western medicine to treat constipation is very easy, but cure constipation is difficult. Therefore, the correct understanding of constipation should first establish confidence in overcoming the disease, followed by long-term treatment, perseverance of the ideological preparation, and then finally with the treatment, indeed, with the examination, experienced specialists can understand the anal canal rectal lesions and muscle synergy through anal finger examination, through fecal imaging to understand the situation and severity of export obstruction, through the barium enema film to understand the colonic segment The anatomical variation and external situation of each colonic segment can be understood through barium enema, the motor function of each colonic segment can be understood through colonic transmission test, and the intrinsic nature of each colonic segment can be understood through electronic whole colonoscopy. We suggest that patients with constipation should be routinely examined by anal finger, and necessary early screening of colorectal cancer – routine stool + occult blood test* 3 times, and for patients with disease duration of more than 3 months, especially those over 40 years old with family history of tumor should consider performing electronic whole colonoscopy for clear diagnosis.