Before the operation, it is suggested to improve the preoperative examination, such as dental film, electrocardiogram, blood routine, liver and kidney function, infectious diseases and so on. To rule out surgical contraindications, in addition to preoperative precautions, preoperative preparation for breast augmentation: it is recommended not to take drugs containing aspirin, because aspirin will reduce platelet coagulation function and ensure normal coagulation function; Patients with hypertension, diabetes, cardiovascular and cerebrovascular diseases will increase the risk of surgery. It is suggested that after controlling the related symptoms, surgical contraindications should be ruled out and surgical treatment should be carried out. Make sure that you are in good health before the operation, and there is no infectious disease or other body inflammation; Women should avoid the menstrual period and enter the operating room; Women or men should quit smoking one week in advance for surgery.