On November 8-11, 2019, the "First World Dental Laser Medicine Association Asia-Pacific Conference" with the theme of "Laser Irradiation on the Road to Excellence in Dental Medicine" and the Fourth National Academic Conference of the 2019 Chinese Dental Laser Medicine Professional Committee The "Conference" was successfully held in Beijing Oriental Grand Hyatt Hotel. This conference will focus on the clinical application and basic research of laser in oral and maxillofacial surgery, endodontics, periodontal implants, low-energy lasers, etc. to fully communicate the oral cavity in the form of expert lectures, special forums, case reports, poster exchanges, etc. New developments and new applications of lasers, discuss how to use lasers to make excellent progress in dental diagnosis and treatment.