The integration of industry is one of the main driving forces to promote the industrial upgrading of the Changzhutan urban Agglomeration.Based on the scholars’research of the integration of production it is to build the city in line with the production of Changsha-Zhuzhou-Xiangtan urban agglomeration integration evaluation index system,and using the principal component analysis(pca)on26industrial parks.The research showed that the yield of urban industrial park city fusion development overall level is not high,in the first category it is of th...