ducer service ,the agglomeration degrees of Scientific Research ,Technical Service and Geological Prosp ecting as well as Wholesale and Retail Trade were higher ,while those of Transportation ,Storage and Post Service industry, and Finance much lower. The others were at a medium place, pared with the foregoing industries. In addition ,the magnitude of spatial Gini-coefficient about Information Transmitting ,Computer Services and Software industry dropped year after year. The authors consider that for pr omoting producer service agglomeration, different regulating and controlling measures on the aspects of spatial distribution and structural optimization should be adopted. Key words :Changsha-Zhuzhou-Xiangtan urban clusters; producer service; agglomeration degree; development route