The standards of breast beauty include two parts: the shape of the breast itself and the relationship between the breast and the body. The shape of the breast itself refers to the elasticity of the breast, the fullness of the breast, the normal color and luster, the smoothness of the local skin, the normal state of the nipple, etc. The relationship between the breast and the shape mainly refers to the relationship between the position and size of the breast and the shape, which should conform to certain aesthetic standards. Who are suitable for breast augmentation surgery? ① congenital breast dysplasia; ② breast atrophy after breastfeeding; ③ bilateral breast asymmetry; ④ after mastectomy; ⑤ asymmetry after breast regrowth; ⑥ those with mildly sagging breasts. All women above 18 years old who have the need for breast augmentation without mental abnormality can undergo breast augmentation in the above cases. Breast augmentation With the continuous improvement of people’s living standard, cultural quality and social civilization, the number of people requesting breast augmentation is also increasing. Women with flat breasts and small breasts lose their normal feminine features and beauty, so they need to perform breast augmentation to increase breast contents, expand breast volume, and improve breast shape and curve to achieve the purpose of restoring the beauty of female breast curves. The main reasons for flat breasts and small breasts are: congenital bilateral or unilateral breast dysplasia, breast atrophy after breastfeeding, asymmetry caused by mild bilateral breast sagging, breast tumors after subcutaneous mastectomy with preserved nipple areola, rapid weight loss, sudden loss of body shape, and post-operative breast cancer. At present, there are many methods of breast augmentation, the more commonly used methods are: silicon capsule implantation, autologous dermal-adipose tissue fascial flap free transplantation, dermal-fat flap filling implantation with tip, latissimus dorsi-dermal composite tissue island flap implantation, and dermal-fat muscle flap transfer of rectus abdominis muscle. The most commonly used of these is silicone capsule implantation. For silicon capsule implantation, breast implants with appropriate volume, width and augmentation slope are selected and implanted in the posterior breast space or subpectoral layer of the pectoralis major muscle according to the patient’s age, occupation, cultural quality, width of the breast form, body fatness, height and individual aesthetics. Posterior breast implantation is to place the breast implant under the superficial layer of breast tissue of the pectoralis major muscle, which is a simple operation with little damage, and the breast augmentation location is natural in appearance, shape and feel; subpectoral placement is to place the breast implant into the deep layer of the pectoralis major muscle, which can reduce the chance of implant breakage and fibrocystic contracture. The gap separation is accurate, less bleeding and easy to separate. However, when separating to 1.0 cm near the body edge of the sternum, care should be taken to avoid damaging the intercostal penetrating branch of the internal thoracic artery, otherwise it is easy to bleed.