Breast surgery is usually a general anesthesia procedure, and the anesthetics can be divided into inhalation anesthetics and intravenous anesthetics, which are usually given through intravenous access. General anesthesia has induction and maintenance administration. The induction period is the stage from wakefulness to loss of consciousness after receiving anesthetic. Before induction, deep venous access will be established by puncture in bilateral subclavian veins, internal jugular veins or femoral veins, and then anesthesia will be injected through deep venous cannulae, the establishment of venous access is for the purpose of timely rescue in case of emergencies during the operation. The maintenance period is to maintain an appropriate depth of anesthesia for continuous administration of drugs, and both the induction and maintenance periods can choose inhalation or intravenous administration, depending on the specific circumstances. It is recommended to keep a good attitude and follow the doctor’s instructions for preoperative preparation.