The satellite stereoscopic images and the oblique photograph data are used as the data sources. The remote sensing images of Hunan Province obtained from ZY-3 are taken as examples. Based on the tile-pyramid model, the fusion of multiple types of data with different resolutions is realized and a real three dimensional (3D) model with an integrated expression of terrain and texture is constructed. In order to achieve the visualization of data models based on the massive terrain data in 3D scenes, a software named ItelliEarth is developed independently. The research results show that the real 3D model constructed by the proposed method can meet the requirements of relevant specifications, which provides an effective way to realize a large-scale 3D real space model.