Although Beijing，Tianjin and Hebei Province are committed to strengthening economic cooperation of Capital Economic Circle for a long time，the rational industrial division，the industrial connection of cities，upstream and downstream related industries are not shaping up. Coordinated and efficient industry value chain does not form. In this paper，we use the industry structure similarity coefficient put forward by United Nations Industrial Development Organization to measure the degree of convergence on industrial structure. By analyzing the two-digit industry，we conclude that industry collaboration focused on which industries and we conduct a comprehensive evaluation of this matter. What’s more，we put forward the optimization strategies to promote the development of industry collaboration in Capital Economic Circle.