Breast augmentation surgery, also known as breast implant surgery, is mainly divided into 4 steps, including incision of the skin, separation of the cavity, implant implantation, tissue suture 4 steps. 1. Skin incision: there are generally three incisions, axillary incision, areola incision and lower fissure incision, the first incision is often used, the second incision may damage part of the milk ducts, resulting in breastfeeding is affected, the third incision scar hyperplasia is more pronounced, which affects the aesthetics, so the first incision is often used. 2. Separation of the cavity and implantation of the implant: after selecting the incision, the subcutaneous tissue will be separated, and the implant will be implanted after separating the breast tissue. 3. Tissue suture: the cut subcutaneous tissue is sutured layer by layer. As the implant belongs to foreign tissue, there is a possibility of rejection after the operation, so it is recommended that women should consider carefully before undergoing breast augmentation surgery.