Virtual indoor wandering technology became an important means of real estate sales, for a long time 3DS indoor effect diagram were widely used, but there were few studies about virtual indoor wandering technology based on the 3DS model. In this paper With 3DS MAX, VC + + and OpenGL software platforms, several key technologies of the virtual indoor wandering based on 3DS model were studied. Indoor scene model is entirely achieved with 3DS MAX , in order to achieve the scene management, the walls, floor and ceiling models are created by polygon modeling. Indoor Scene Management is based on the Portal technology, the cone cutting algorithm is designed to realize the real-time wandering. The bounding sphere collision detection technique is used to achieve the realistic.