The process of painless gastroscopy is four processes: fasting, anesthesia, examination and awakening. 1. Fasting: patients should fast for eight hours before painless gastroscopy, and water should be prohibited for three hours before the examination, in order to ensure the state of the stomach and the accuracy of the examination results. 2. Anesthesia: check the patient’s general condition before anesthesia, do the corresponding examination and laboratory tests, if there are no contraindications, first of all, establish the intravenous channel, inject propofol intravenously, about five minutes after the anesthesia drug began to play a role in the effect of gastroscopy can be carried out. 3. Inspection: the mirror from the mouth into the throat to reach the stomach, can observe the esophagus, stomach, duodenum whether there is anomaly, this process lasts about ten minutes or so. 4. Wake up: about ten minutes after the examination, as the anesthesia is slowly metabolized, the patient will wake up, and the whole painless gastroscopy examination will be completed. Two hours after the painless gastroscopy, drink more water, pay attention to rest, do not eat spicy and other stimulating foods, and do not exercise strenuously. If there is any abnormality in the body, you can go to the hospital for examination in time.