Objective: The paper analyzes the hot topics, development trend of DRG in China since the new medical reform, in order to provide reference for relevant theoretical, practical research. Methods: The literature published in CNKI from April, 2009to April, 2022were retrieved with "DRG", its Chinese, English synonyms, the research status was presented. Cluster analysis of high-frequency key words was conducted to draw the topic strategic diagram. Results: The number of papers published in this field showed a trend of rapid increase, journals, publishing institutions were dispersed. DRG research in China can be divided into six clusters of topics. Conclusion: The thesis covered a wide range of topics with rich contents, the degree of attention, research maturity of each topic are different. Researchers should pay attention to the progress of core research topics, promote the practical exploration of surrounding topics