Autologous fat breast augmentation is now a more popular way of breast augmentation, and the difference with implants is mainly the use of its own tissue, there is no foreign body, reducing problems such as rejection. However, the effect of autologous breast augmentation is related to the surgeon’s surgical experience and your own body condition, and the risks are as follows: 1. Breast nodules: mainly formed by fat necrosis. A large amount of calcification can be seen on the flat film when taking the film, and it is difficult to distinguish it from tumor during physical examination, so nuclear magnetic mammography is needed. This condition requires surgical aspiration or surgical removal of the nodule. 2. Infection: Deep abscess or superficial abscess is seen, which is usually consistent with the manifestation of mastitis. The infection is limited and requires incision and drainage after abscess formation. This kind of infection is difficult to heal and usually requires a long time of medication change to heal, and it is easy to repeat; 3, sensory impairment and nipple depression: the nipple is damaged during injection, and it is related to the doctor’s technique when playing fat, and it is impossible to complete autologous fat breast augmentation at one time, and it requires several surgeries to be successful; 4, pneumothorax: the pneumothorax may be caused by passing through the chest cavity when injecting autologous fat, but this complication is very rare. It is recommended that candidates visit regular hospitals to avoid the risks of surgery in order to obtain satisfactory treatment results.