Abstract: In order to prevent the occurrence of gas accidents caused by abnormal gas emission at the working face of coal mine, we adopt the methods of gas geological analysis and GIS spatial analysis technology to implement the dynamic analysis of coal mine gas geology. And on this basis, by using prediction method of different-source and combining dynamic information of gas extraction at working face to dynamically predict the amount of gas emission. Ultimately, based on system architecture design, we use MapGIS key technologies to realize the function of software and get a successful application in Linhua Coal Mine.