Surgery is an important means of treatment for surgical diseases, but the unavoidable trauma of surgery and anesthesia will also increase the physiological burden of patients, and may also lead to complications, sequelae and other adverse consequences, while naturally the patients and their families will also suffer a certain degree of psychological pressure. Before the patient is admitted to the hospital, the preoperative preparation should be perfected as much as possible in order to better cooperate with the treatment to achieve the expected surgical effect and shorten the hospitalization time. Preparation of patients before hospitalization: 1. Hypertension: it is necessary to continue to take antihypertensive drugs to avoid withdrawal syndrome. Controlled below 160/100mmHg, no special preparation can be made. Blood pressure is too high and needs to be controlled, but does not need to be controlled at normal level. Patients with a history of hypertension and a sharp rise in blood pressure entering the operating room will have surgery postponed if necessary. 2, diabetes: diabetic patients are in a state of stress during the perioperative period, complications, mortality rate than without diabetes retarded by 50%, affecting the healing of surgical incisions, surgical infection chances of increasing complications. Before admission, fasting blood glucose should be controlled not higher than 8.3mmol/L, urine glucose lower than (++), urine ketone body negative. If necessary, after endocrinology treatment, elective surgery. 3.Cardiac disease: patients with cardiac disease have poor surgical tolerance. After being treated by internal medicine before admission, surgeons, anesthesiologists and internal medicine doctors need to assess the risk and decide the timing of surgery. 4.Other patients with liver and renal insufficiency need to be stabilized by relevant internal medicine treatment before elective surgery. 5.Prevention of infection: find out whether the patient is infected or not in time before the operation, and forbid the infected person to have more contact with the patient. Strictly follow the principle of asepsis during the operation. 6, female patients should avoid hospitalization during menstruation, which will delay the date of surgery. 7, adaptive exercise: practice correct coughing and coughing up sputum, like smoking patients had better quit smoking for 2 weeks. Adjust a good psychological state, cooperate with the treatment. Patients suffering from serious medical diseases, it is recommended to control the medical diseases to achieve a satisfactory state before surgery, which is the first and foremost guarantee that the patients are safe for surgery.