Abstract: This paper unifies the urban cellular automata and the virtual reality technology to generate a three-dimension (3D) virtual city which is composed of the diverse buildings along with time and space variation. To construct an urban CA model that is based on the structure of a cellular entities can produce a layout of the virtual city with the buildings and a group of data about cellular state which is based on time series. We use DEM and DOM data to generate real three-dimensional terrain, load the 3D city model into the virtual scene through the APIs, and lay the city buildings to the corresponding position in the 3D virtual scene with the cellular entity attribute information. The result shows that the method can generate three-dimensional virtual city which is based on the timing changes and posed by diversification buildings.