Abstract: Coal mine intelligence is the way for a high quality development of coal industry. At present,it is in the pri- mary stage of coal mine intelligent development. It still has the problems of ubiquitous perception,unreliable synchro- nous transmission of multi-type data,poor real-time remote control,and low efficiency of intelligent decision-making in- tegrated with big data,and so on. The fifth generation mobile communication technology for the intelligent application of vertical industry provides an opportunity for solving the above problems. In this paper,six key technologies of high frequency communication,massive MIMO,ultra-dense network,device-to-device communication,network slicing and mobile edge computing in 5G are analyzed. It also studies the shortcomings of the intelligent application of coal mine in information perception,multi-type data transmission,real-time decision control,the application of new technology and the interconnection requirements of heterogeneous equipment. Taking video transmission as an example,the paper ana- lyzes the limitations of 4G technology in the future application,studies the shortcomings of underground WiFi networ- king,and points out the necessity of applying 5G technology underground in coal mine. Combined with the advantages of 5G technology and the actual requirements of coal mine,the paper puts forward some underground application sce- narios,such as high precision real-time positioning and application service,virtual interactive application,remote real- time control,remote cooperative operation and maintenance,underground inspection and security,based on 5G technol- ogy,and puts forward the conception of underground intelligent mining and remote real-time visual control based on mixed reality. Also,the paper gives the overall structure of underground application 5G technology:cable optical fiber backbone ring network plus 5G coverage,analyzes the key points of implementation,points out that the combination of 5G technology and underground application scene can maximize the role of 5G technology in intelligent mining of coal mine,and briefly looks forward to the integration and application of 5G technology based on 5G technology,such as In- ternet of things,big data,cloud computing,artificial intelligence and virtual reality in coal mine intelligence.