Abstract: Mine Digital Twin(MiDT)is an important part of intelligent mine construction.It is a safe,efficient and con⁃venient intelligent system integrating advanced technologies such as model construction,intelligent control,fault pre⁃diction and human⁃computer interaction.It is an important technical engine to promote the digital and intelligent trans⁃formation of mine.Under the background of mine digital and intelligent construction,the basic connotation of MiDT is expounded,the research status of MiDT technology in China is summarized and analyzed,and its future develop⁃ment trend is prospected.Firstly,the basic concept,level division,typical application and latest development of digit⁃al twin are introduced,and the application difficulties of MiDT are analyzed,which shows the necessity of MiDT devel⁃opment.Secondly,the application and development status of digital twin in mine construction,mining,monitoring,op⁃eration and maintenance are investigated,and the deep integration of new generation information technology and MiDT promotion process is analyzed.Thirdly,the system architecture of the MiDT model is expounded,the composition and function of the subsystems such as end layer,edge layer,network layer and cloud layer are analyzed,and the quadrilat⁃eral system model of MiDT is constructed.Based on the main components and operation mechanism of the five⁃dimen⁃sion digital twin model,the quadrilateral model of MiDT is constructed.Then,the internal relationship between the sys⁃tem architecture of MiDT model and the key technologies of MiDT is expounded,and the key technologies and re⁃search contents of MiDT in model construction,intelligent control,equipment fault prediction and human⁃computer in⁃teraction are analyzed and summarized.Finally,the research priority and development directions of MiDT technology in the future are summarized from the aspects of practical application,model system architecture and key technologies.