Plastic treatment of various congenital and acquired deformities in maxillofacial region, repair and reconstruction of mandibular distraction osteogenesis bone defect, jaw tissue engineering. Can independently carry out the diagnosis and treatment of difficult diseases in oral and maxillofacial surgery. Orthognathic plastic surgery and distraction osteogenesis are the earliest standardized operations in the province, and the "three-focus distraction osteogenesis mandibular defect repair and reconstruction" is the first in China. In 2005, Health News, China Hospital News and local media reported the news. He has edited 2 books and published more than 20 papers, including 3 in SCI. At present, it undertakes a project of Shandong Natural Science Fund and a project of Shandong Provincial Health Department. In recent years, three new technologies and projects have been developed: trifocal distraction osteogenesis to repair and reconstruct mandibular defects, orthognathic surgery and interventional treatment of temporomandibular joint diseases.