Abstract: By analyzing the advantages of traditional algorithm of disposing the spatial conflict between roads and buildings, one new method is brought forward, which refers to simulating the method of manual displacement and keeping the general spatial layout of the buildings well. Firstly, the multilevel spatial disposal principles between the roads and buildings of different regions are put forward in terms of the difference of region density. The multilevel spatial disposal principles refer to three levels: one is to keep the origin distance scale, spatial relation and spatial layout in the sparse region, the other is to keep the minimal distance and spatial orientation relation in the dense region, the third is to only keep the minimal distance in the high-dense region. Then, the displacement layers of buildings are built according to the neighbor degree between buildings and roads. And the displacement operation will be executed respectively according as fore-and-aft displacement layer order. When disposing the conflict and displacing the buildings, the multilevel spatial disposal principles spread through the calculation and aggregation of extern forces and the design of displacement algorithm on the buildings. The spatial conflicts between the road and building, and the conflicts between the buildings, are disposed especially.