to accurately understand the current research situation of blended learning in medical educationand find the problems and shortcomings in the study.

In order to accurately understand the research status and problems of blended learning in medical education, adopting the content analysis, a literature review is constructed from the aspects of the number of publications, research contents and hot topics using the Bicomb analysis system. This paper selects 61 relevant articles from CNKI. By reliability analysis formula R=nK/[1+ (n-1) K], the reliability R is about 0.97, more than 0.9, which means the classification results have a higher degree of credibility.

It is found that Blended learning is mainly concentrated in medical colleges and universities in the field of medical education in China. The hot research topic is the use of "flipped class", "PBL teaching mode" and other new teaching modes, mainly based on the third party network platform like MOCC and micro courses.

The results show that there are many problems in present research. In China, the research of blended learning started late, and the quality needs to be further improved. In further research, we should strengthen the cooperation of vari-ous fields, pay more attention to the development of network teaching platform, optimize the quality of teaching resources, and improve the level of empirical research.

Medical education; Blended learning; Literature review; Content analysis