The breast augmentation is currently the more commonly used way of breast augmentation, breast implants with its wide applicability, a wealth of clinical success stories, breast surgery preferred status is still irreplaceable. After the implantation, as a “foreign body”, the body will form a layer of envelope wrapped around the prosthesis to limit the prosthesis in the envelope cavity, the prosthesis and muscle isolation in addition, the prosthesis implanted in the mammary gland, after the pectoralis major muscle or dual plane that the prosthesis and the mammary gland is not in the “same layer”. The implants are not in the “same layer”. Although the purpose of breast augmentation is to increase the volume of the breast, the implant is not actually placed in the breast, but in a dual plane behind the breast, behind the pectoralis major muscle, or partially behind the pectoralis major muscle and partially behind the breast, therefore, the surgery will not cause damage to the breast and can be safely performed for breastfeeding. What are the precautions for breast implant a. Timely decision of breast augmentation incision and its level of breast implantation. The incision can be chosen from axillary incision, inframammary fold incision, periareolar incision, and the implant can be implanted behind the pectoralis major muscle or behind the mammary gland. It should be noted that the periareolar incision is more suitable for married women with children, and the areolar incision is a 3~4CM curved incision made at the junction of the areola and the skin. However, the areolar incision is more difficult to implant and may damage the breast ducts and affect the breastfeeding function. Fairies who are afraid of affecting breastfeeding can choose axillary incision and inferior crease incision. Second, the choice of breast augmentation materials. For any recipient is very important, including the source of materials, at least through the current domestic testing can be done. There is no quality guarantee in case of problems with the material, and whether the choice of breast implant shape and size is in line with the specific conditions of the recipient, such as height, shape of the chest gallery, width and size of the chest, waist, hips and actual conditions of the mammary glands and other factors. Third, breast augmentation should be avoided during menstruation. Fourth, a comprehensive physical examination and laboratory tests, no serious medical diseases and local infection foci before breast augmentation surgery. Breast implants are safe and effective, find a professional doctor to choose the regular brand of implant materials, do not blindly seek large, choose the right shape of their implants, size, to achieve the most suitable for their ideal results.