This paper primarily calculates the similar coefficients of the industrial structure in Changchun and Jilin City, the results show that the similarity of the three industries in the two cities is high, but the similarity of the subdivided manufacture industries is low. We also find evidence that the conditions for the industrial integration of the two cities are improved. The paper also explores the reasons for the current situation of the industrial integration in
 R. Q. Pang and J. Li, “Developmental Strategies of Chang-chun-Jilin-Tumenjiang of Regional Industry under the Background of Integration,” Journal of Northeast Normal University (Philosophy and Social Sciences), No. 4, 2011.
 L. M. Zhao and L. Zhang, “The Base of Driving Power for Industrial Integration in the Area of Beijing, Tianjin and Hebei Province,” Journal of Tianjin Normal University (Social Science), No. 6, 2011, pp. 11-16.