Abstract: Based on creator terrain studio (CTS) and Vega Prime, this paper manages to build up the massive terrain 3D simulation system. By preprocessing database of ETM and DEM in Fujian, virtual texture and topographic pattern are generated by CTS. After texture mapping, a 3D massive terrain scene is created by using of Vega Prime and finally massive terrain 3D simulation system is realized based on MFC. The application of virtual texture, level of detail model, organization of massive terrain database, terrain texture mapping, large terrain collision detection, and large terrain dispatching technology is helpful in solving large scale image and terrain roaming.