Zhangjiakou Second Hospital pediatric orthopedics director, chief physician, master tutor, Zhangjiakou Medical Association pediatric Osteology branch chairman; Member of Children's Orthopedic Specialty Committee of SICOT China Department; Member of the Association of Children's ORTHOFIX (China); Member of Orthopedics Branch (Pediatric Department of Orthopedics), China Association for the Promotion of International Exchange of Healthcare; Hebei Provincial Preventive Medicine Association children bone disease prevention professional Committee Standing Committee