Five years. According to the relevant data of Zhejiang Province, the medical education in the middle school attached to Zhejiang Medical University has been completed for five years. All medical and health units must participate in continuing medical education or continuing education of traditional Chinese medicine in accordance with the regulations when applying for and evaluating the qualifications of senior health technical posts, and must obtain 5- 10 credits of Class I every year, with a total of 25-50 credits in five years; Class II credits 15-20 credits, totaling 75- 100 credits in five years, cannot be calculated across years. At the same time, the national continuing medical education credits must be above 10 within five years.