Dental implant restoration has become the most common method to repair dentition defect or missing teeth in recent years. However, as a common complication of implant restoration, peri-implantitis has a high incidence and treatment difficulty, which seriously affects the success rate of implant treatment. Through systematically reviewing relevant literature, this study conducts an in-depth discussion on the application of photo-assisted antibacterial therapy in the treatment of peri-implantitis, evaluating the antibacterial efficiency, safety and potential application of various emerging photo-assisted antibacterial technologies in the treatment of peri-implantitis. It aims to explore new and efficient antibacterial strategies, provide new ideas for the treatment of peri-implantitis, thereby improving the success rate of implant treatment and patients' quality of life.