The process of painless gastroenteroscopy is generally divided into before, during and after the examination, as follows: 1. Before the examination. (1) painless gastroenteroscopy before the need to adapt to prove sure, patients without major diseases, no mental illness, etc., painless gastroenteroscopy before the need for fasting for 6-8 hours, the patient take the left side of the lying position, the teeth bite the mouth ring, connected to the cardiac monitor, and then given intravenous anesthesia. (2) Before painless colonoscopy, patients need to clean the intestines, take the left side lying position, expose the anus, connect the cardiac monitor, and then give intravenous anesthesia by the anesthesiologist. 2. During the examination. (1) During painless examination gastroscopy, the physician enters the mirror from the oral cavity with the mirror body in hand, observes the mucosa of each part in turn, and then repeats the observation of each part of the mucosa when retreating from the mirror. (2) painless colonoscopy, the physician holding the mirror body from the anus into the mirror, in turn to observe various parts of the mucosa, and then need to repeat the observation when retiring the mirror, if the examination found mucosal lesions, etc., the physician will be under the microscope to clip the tissue to send to the Department of Pathology for laboratory tests, if the mucosa is normal, the normal retiring the mirror, and then wait for the patient to wake up. 3. After the examination: after the painless gastroenteroscopy, the patient must be accompanied by family members after waking up, generally two hours later, you can drink warm water, eat, tell the patient some precautions, according to the situation of the release of the report. Specific appointment procedures can be consulted with the local hospital, if there is discomfort in a timely manner to avoid delays in the condition.