Day surgery has been applied in practice since more than 30 years ago in western world, which could obviously reduce the length of hospital stay, accelerate the recovery of patients, and achieve desirable economic and social benefits. Despite of the common development of day surgery in various diseases, the application of day surgery in breast general anesthesia surgery is limited. No related management standard has been established. By summarizing the experience of breast cancer day-surgery, Xijing Hospital of Air Force Medical University has established a comprehensive management standard, including preoperation, intraoperation, and postoperation management. Meanwhile, the nursing, resource allocation, follow-up, and stuff management are all enrolled into the management standard, aiming to improve the development of day surgery in general anesthesia breast cancer operation.