The present paper proposes a new building change detection method combining Lidar point cloud with aerial image,using multi-level rules classification algorithm,to solve building change detection problem between these two kinds of heterogeneous data.Then,a morphological post-processing method combined with area threshold is proposed.Thus,a complete building change detection processing flow that can be applied to actual production is proposed.Finally,the effectiveness of the building change detection method is evaluated,processing the 2010 airborne LiDAR point cloud data and 2009 high resolution aerial image of Changchun City,Jilin province,China;in addition,compared with the object-oriented building change detection method based on support vector machine(SVM) classification,more analysis and evaluation of the suggested method is given.Experiment results show that the performance of the proposed building change detection method is ideal.Its Kappa index is 0.90,and correctness is 0.87,which is higher than the object-oriented building change detection method based on SVM classification.