Do not want to do colonoscopy is not recommended to choose intestinal ultrasound as an alternative diagnosis of the condition, because the intestines are cavity organs, ultrasound detection is not sensitive, will affect the doctor to determine the condition. Intestinal ultrasound can only find occupying lesions or obvious ulcers and other lesions in the intestines, but for the changes in the intestinal mucosa, can not clearly make a diagnosis, and if the intestinal ultrasound found to have occupying lesions and other conditions, can not be taken to the mucosal tissues of the line of pathology to clarify the nature of the lesions, so at present for the intestinal examination is still the first choice of colonoscopy. Enteroscopy is the gold standard for diagnosis of intestinal diseases, and can be used to detect unexplained intestinal inflammation, gastrointestinal bleeding, low intestinal obstruction, colorectal tumors, polyps, etc.; for some small foci that cannot be diagnosed by imaging tests, generally only through the colonoscopy to determine the necessity of a clear diagnosis of pathological biopsy through the colonoscopy can be taken. If you do not want to carry out colonoscopy, now there is a capsule endoscopy can replace colonoscopy, capsule endoscopy is a non-invasive way of checking the safety of high, oral intake of a small camera that is capsule endoscopy, and finally through the digestive tract excretion can be. Through the camera to transfer image information to the computer, observe the intestinal tract, less painful than enteroscopy, but there is a certain risk, and can only be observed, can not obtain pathological tissue.