Objective To evaluate the long-term effects of breast implant augmentation via endoscopic assisted axillary approach. Methods A retrospective analysis was conducted on 53 patients who underwent endoscopic assisted transaxillary double dual plane breast implant augmentation from July 2014 to December 2016. All patients were followed up for more than 18 months. Postoperative breast diameters were measured, the complications related to prosthesis augmentation was evaluated, and the postoperative satisfaction of patients was evaluated. Results The post-operative length of the suprasternal notch to nipple, clavicle midpoint-to-nipple distance and nipple-level chest circumference were significantly increased compared with the preoperative one(P 0.05). A total of 29 cases suffered complications after operations, of which the vast majority(98%) had mild complications(such as nipple sensory changes, the implant edge palpability), and only 1 patient(2%) had severe complications(such as Ⅲ-Ⅳ capsule contracture). Conclusion Endoscopic assisted transaxillary double dual plane breast implant augmentation is clearly able to increase the breast volume of patients with fewer complications, which is worthy of clinical application.