Abstract: Objective： To evaluate the current status of micro lesson studies in medical field in China by the visual analysis.Methods：We found the micro lesson studies by searching the CBM， Wanfang database and CNKI， the retrieval time was January 6， 2018. Researchers independently selected the micro lesson studies by inclusion and exclusion criteria， and extracted the related information (key words， province， researcher and institution of studies) and produced matrix by BICOMS-2 software， the figure of network by NetDraw， cluster analysis by gCLUTO.Results： 1119 papers of micro class were included.The number of the micro lesson studies was unbalanced in the publish time， journals and provinces. The main authors were divided into 23 main groups， the main organizations were divided into 2 research teams， there were certain relationship between the authors， but the organization cooperation was very weak， there were mainly four research topics.Conclusion： The number of micro lesson studies in China shows a trend of rapid growth， more and more authors and institutions are involved in micro lesson studies，but the author cooperation is close， the institution cooperation is not close， the author and the author of cooperation still needs to be further strengthened. Research topics should be further expanded in the future.