Study on the influence of extraoral arch on occlusal surface in the treatment of maxillary crowding: comparative analysis of the influence of J-hook of head cap and micro-implant screw on occlusal surface when the upper anterior teeth are depressed; mechanical principle correction characteristics of self-locking brackets, etc. In academic circles, it is famous for its meticulous work, solid basic skills and comprehensive technology.

Worked in the Department of Oral Periodontology of the Ninth People's Hospital for 20 years, focusing on the clinical and experimental research of periodontal disease. It has a profound theoretical foundation and rich clinical experience in the diagnosis and basic treatment of periodontal disease and comprehensive treatment of moderate and severe periodontal disease. He is good at periodontal surgery, dental implant restoration and diagnosis and treatment of pulp diseases, and has deep attainments in multidisciplinary combined treatment of oral cavity. Participated in many national and municipal scientific research projects and won the second prize of Shanghai Science and Technology Progress Award. And has been invited by X clinic and other well-known health publicity TV programs for many times to popularize oral health knowledge for the public.