With the wide popularization of mobile Internet and the rapid development of augmented reality technology,it is urgent to innovate the publicity technology and forms of mountain flood prevention and control.Based on the analysis of the advantages of AR technology in mountain torrent disaster prevention and publicity,this paper uses mobile Internet and augmented reality technology to build an interactive mountain torrent disaster publicity system,uses professional engine to exchange data with GPU,and dynamically renders and simulates through metal,Open GL ES2 and Open GL ES3 interfaces.Finally,through stereo image and voice,it dynamically shows the relevant knowledge of mountain flood disaster prevention and control,and improves the interactivity,authenticity and interest of publicity work.The results can be used as a reference for the follow-up research on mountain flood disaster publicity and application.