A colonoscopy usually requires you to take your pants off. A colonoscope is a device that consists mainly of a thin and bendable lens that can be used to examine the intestinal tract. It is used to diagnose diseases such as ulcerative colitis, colorectal polyps, and colon cancer, as well as to check for unexplained lower gastrointestinal bleeding, chronic diarrhea, and other conditions. Before doing the test, please note that at least 12 hours can not eat, and need to carry out the appropriate intestinal preparation, otherwise it will affect the test results. The operation requires the patient to take off the lower body clothing, change into special examination pants, lying on the left side of the position, knees bent, and then the doctor will enter the enteroscope slowly and gradually from the anus into the intestinal tract, to observe the situation in the intestinal tract. When the observation is over, the doctor will gradually withdraw the enteroscope from the intestine until it is completely detached from the body and the operation is finished.