Abstract: The crucial factors of the impact of service industrial cluster on mansions’ productive efficiency are industries in clusters, headquarters and the diversity of industries of a mansion. We chooses traffic & business district in Dongchen district in Beijing as the case to research the relationship among cluster, industries’ diversity and productive efficiency through response and influence coefficient, linkage coefficient and data envelopment analysis. The conclusions find that the decrease of diversity of industries in a mansion can increase its productive efficiency. A mansion where headquarters are in has higher productive efficiency than others. Furthermore, if a mansion where headquarters are in has single or less diverse industries, its productive efficiency will higher than other mansions where headquarters are in. Therefore, high agglomeration of single industries is important for a mansion for increasing its productive efficiency.