In order to clarify the overall development of DRG research since the new healthcare reform, this paper uses the bibliometric tool CiteSpace software to visualize and analyze the knowledge mapping of 582 documents about DRG payment research included in CSSCI, CSCD, and Peking University core journals in the database of China Knowledge (CNKI) from April 2009 to October 2023, and explore the research status, research hotspots, and research trends of China's DRG payment research from the quantitative and quantitative perspectives. perspective to explore the research status, research hotspots, and research trends of DRG payment research in China since the new healthcare reform. The results show that research authors and research institutions have begun to take shape, but there is a lack of cooperation and communication among the inter-regional author groups; the hot topics are mainly centered on four aspects, namely, grouping mechanism and tool development and application, fee-control effect, performance management and evaluation, and continuous improvement of healthcare quality; and the stage of development is divided into three periods, namely, research initial exploration, expansion, and leaping up. It is suggested that future exploration should be strengthened in broadening the application of DRG to non-comprehensive hospitals, innovating targeted responses to DRG implementation, and promoting cross-regional and cross-field research.