Doing surgery a few days in advance of hospitalization is not necessarily, because different surgery hospitalization in advance of the time is not the same, to skull surgery, cesarean section surgery, appendicitis minimally invasive surgery, etc. as an example. 1. Cranial surgery: when doing this kind of surgery, it is usually necessary to be hospitalized three days in advance, because before the surgery, you have to do a comprehensive physical examination, so that the body meets the requirements before the surgery. 2. Cesarean section surgery: Cesarean section surgery usually requires hospitalization one day in advance, this kind of surgery needs to observe the fetus and its own condition in advance, and hospitalization one day in advance is conducive to a better operation by the doctor. 3. Minimally invasive appendicitis surgery: this kind of surgery is usually not to be hospitalized in advance, usually the same day can be operated, but the operation requires general anesthesia, usually need to stay in bed for 6 to 8 hours after the operation. No matter which kind of surgery, you need to combine your own situation with the severity of this condition to hospitalization time, such as physical discomfort timely communication with the doctor.