With the rapid development of China's higher education and the intensified reforms in medical and health services， the problems and contradictions are increasingly prominent in ortho-pedic clinical teaching， especially how to improve medical interns' ability to read images. Picture archiving and communication system （PACS） plays an important role in academic education of medi-cal imaging. Case-based learning （CBL） is a team seminar teaching mode that is guided by cases， based on problems， targeted at students， and dominated by teachers. PACS and CBL were perfectly combined in orthopedic clinical teaching to improve teaching efficiency and the outcome was evaluat-ed through a questionnaire. Results showed that this teaching method inspired students' interests in learning， cultivated the orthopedic clinical way of thinking thus achieved better teaching effects.