Open University plays an important role in promoting educational equity, lifelong learning, personalized learning and so on, and has become a hot topic in related disciplines. Taking CNKI as the data source, this paper uses the statistical tools such as SATI, Excel and SPSS for visual analysis, analyzes the research status of open universities in China from three dimensions: the number of papers published, the source of literature and journals, the author and research institutions; summarizes the research hotspots and development trends of open universities in China from the three dimensions of high-frequency keywords, social network and cluster analysis, Finally, it summarizes and reflects on the research status of Open University in China, in order to provide a useful reference for the research of Open University in China.