The duration of anesthesia effect after surgery is related to the type of anesthesia used and the patient’s metabolism, and cannot be generalized. If it is general anesthesia, most of the drugs will be gradually metabolized and the anesthesia effect will disappear about 4~6 hours after the drug is stopped, and then the pain of the surgical wound may appear. If it is local infiltration anesthesia, the duration of different drugs and concentration is different, and most of them can be maintained for 1~2 hours, for example, 2% lidocaine can be maintained for about 1 hour, and 3% bupivacaine can be maintained for 1.5~2 hours and so on. In case of epidural anesthesia, the duration of anesthesia is similar to that of local infiltration anesthesia, which is also related to the duration of anesthesia drug action, and the anesthesia effect may disappear only 4~6 hours after the surgery. In addition, the time for the anesthesia effect to disappear is also related to the individual’s physical condition, so if you have any uncomfortable symptoms after the surgery, consult the surgeon in time.