1, chief physician and professor, Department of Otolaryngology, xuanwu hospital, Capital Medical University, specializing in cochlear implant surgery, otology and audiology, diagnosis and treatment of head and neck tumors, pronunciation and speech. Chief physician Zhang Daoxing personally completed more than 4,500 cases of cochlear implant surgery, with no failure rate 1 case, and achieved the results of the largest number of operations, the highest quality of operations and the failure rate of 0% in the world.

2. Cao Keli, chief physician and professor of otolaryngology, Peking Union Medical College Hospital, is good at otology, especially at the diagnosis, treatment and microsurgery of deafness. He has accumulated rich clinical experience, profound professional basic knowledge and skilled surgical operation skills in the field of otology. In addition to high-quality cochlear implant surgery with normal cochlea, it can also complete cochlear implant surgery in cases of congenital cochlear malformation, cochlear ossification and otitis media.