Abstract: For the establishment of coal mine hidden danger identification information transmission system,on the basis of using optical fiber as the main data transmission medium of coal mine hidden danger information,we propose that using SHDSL technology on telephone twisted-pair transmission medium as a secondary data transmission medium to carry on extension of downhole data transmission system and the experiment research is done too.On this basis,we introduce mobile hand-held terminal as the main carrier of the closed-loop hidden danger management,discuss the coal mine hidden danger management mode which is based on the underground data transmission platform,and take concept of the timeliness of information into consideration,which further improves the coal mine hidden danger closed-loop management process and has a certain practical significance for the development of coal mine hidden danger.