Abstract: In order to explore the research context and hot spot changes of mine dust, this paper took 1 863 literatures collected by CNKI from 2001 to 2021 as samples, and analyzed the spatial-temporal distribution characteristics, hot topics and frontier trends of mine dust field in China during the past 20 years by using Citespace and VOSviewer knowledge graph technology. The results show that the study of mine dust can be divided into three stages: fluctuating growth period (from 2001 to 2007), rapid growth period (from 2008 to 2015) and slow transition period (from 2016 to 2021); the subjects of the journals mainly focus on mining engineering, safety science and engineering; a relatively stable core group of authors and institutions has been formed in the research field; the research topic includes the whole process of mine dust generation, migration, control and disaster consequences.Future mine dust research should focus on underground mines and deep concave open-pit mines under complex and dangerous environment, strengthen the cooperation and interaction between research institutions and interdisciplinary fields, and promote the integration and application of mine dust research and automation, information, intelligence and other technologies.