Hello. First of all, we must be fully psychologically prepared, understand the effect after the operation, whether the operation is a science or a myth, and be realistic about the expectations after the operation; Understand that there will be pain, swelling, ecchymosis and other discomfort in the recovery period after surgery; Understand the possible complications after the operation, which is the price you may have to pay. You can't take supplements such as ginseng and anticoagulants such as aspirin before operation to reduce intraoperative bleeding; Surgery needs to avoid menstrual period; If you have symptoms such as a cold and fever, you need to suspend the operation; Quit smoking and drinking before operation 1 week.