The difference between general anesthesia for painless gastroscopy and general anesthesia for surgery includes different anesthesia methods as well as anesthesia time. 1. Anesthesia time: painless gastroscopy anesthesia because the examination method is relatively simple, the time needed is relatively short, so the anesthesia time is also relatively short, the general dosage of anesthesia is relatively small, about 5 to 10 minutes the patient will wake up; surgical anesthesia treatment is more complex, the time needed is longer, more anesthesia dosage, the general withdrawal of 10 to 20 minutes to wake up. 2. Anesthesia: painless gastroscopy anesthesia using intravenous injection, anesthesia metabolism time is relatively fast; surgical anesthesia using general anesthesia tracheal intubation, from the patient’s trachea into the tracheal tube, and the ventilator to establish a respiratory pathway, in the process of the operation by the anesthesia to control the patient’s respiration, to ensure that the patient’s life safety. In addition, there are certain contraindications to anesthesia, if necessary, the patient needs to consult a specialist before examination to ensure safety.