Breast is the second sex characteristic of women, and a full, firm and even breast can reflect the beauty of women’s curves. In addition to breast implants, another most commonly used method is breast augmentation with autologous fat injection. It has the advantages of easy to take materials, abundant sources, easy to operate, realistic and natural, etc. More importantly, it is filled with its own fat particles and has no foreign body rejection reaction, which has no effect on human health, thus ensuring safety. This technique is mainly suitable for the adjustment of small breasts and asymmetrical breasts with still elastic breast skin and good local blood flow. At the same time, for those who have the need of weight loss and beauty in other parts of the body, they will receive the effect of killing two birds with one stone, which can further improve the satisfaction of the operation. It is not suitable for those whose breasts have been severely dried out and sagged, as well as those who are pregnant and breastfeeding. The breast should be routinely checked for lumps and nipple overflow before surgery, and any abnormalities found should be treated first. The literature reports that there is about 50% absorption rate of self-fat particles for breast augmentation, and if necessary, repeated injection will achieve better results. The fat tissue is taken from certain fatty parts of the body, such as the abdomen, waist, buttocks, femur, jaw, etc. Since the fat cells are used as the filling tissue, no rejection reaction will occur after the operation, and it can also play a role in improving the beauty of the body, achieving the purpose of both. The specific operation method: mark the standing position before the operation, under local expansion anesthesia, use the syringe suction method as much as possible, use a small negative pressure suction tube to radially suction the fat particles in the parts with more autologous fat, pay attention to reduce the damage of fat cells as much as possible, then the fat particles stored in the syringe, after the physiological saline rinse and filter to remove the fat droplets, fibrous tissue fragments, blood clots and other impurities, the pure concentrated fat particles obtained The fat pellets were packed in sterile syringes and set aside. In order to maintain the vitality of the fat particles, they should be injected into the breast as soon as possible after screening, and the injection process should be gently and constantly adjusted to better shape the breast. Fat injections are prone to infection and liquefaction necrosis, so the sterile conditions of the operating room and the disinfection of the operation should be high. Strict attention to aseptic operation is required to ensure the success of the surgery. In order to avoid possible postoperative complications such as hardening and liquefaction of the fat, it is important to avoid concentrating the fat in the same area. Because the injected fat particles survive mainly by the infiltration of tissue fluid and blood vessels around the recipient area in the early stage, it is not advisable to inject too much fat each time to reduce the consumption of metabolism and improve the survival rate, generally about 90-150ml per side. Massage the breast after injection to make the fat particles evenly distributed without hard knots and fully contact with the breast tissue in the recipient area so that the transplanted fat cells can establish blood contact with the host as soon as possible and The fat cells will be activated. Appropriate pressure bandages are applied for one week after surgery, and oral antibacterial medication can be given for 3-5 days. With the development of fat aspiration, granular fat transplantation has been widely used in recent years, and autologous granular fat injection for breast augmentation is one of the most used and most effective procedures, which is favored by beauty seekers because of its simplicity, safety, effectiveness and no obvious scar after surgery.