<p>Based on green development theory, green industrial system and green competitiveness, this paper puts forward the “green development theory, green industrial system and green competitiveness evaluation”. This paper makes a horizontal comparative analysis of the actual development data of Tianjin, Beijing, Shanghai and Chongqing, and verifies the scientific, standardization, systematisms and rationality of the “green model” evaluation index system. Using the measurement method combining fuzzy analytic hierarchy process and entropy method to determine the index weight of the evaluation system, this paper makes an empirical study on the green development competitiveness of Tianjin from 2011 to 2016, and analyzes the development status and existing problems of Tianjin’s green development competitiveness. Finally, aiming at the problems and weaknesses such as the lack of green social management function and the worrying overall quality of green environment in Tianjin, the paper puts forward countermeasures and suggestions to speed up the planning of green development demonstration area, make efforts to make up for the shortcomings of green environment, optimize the development strategy of industry city integration, build a smart ecological green city, publicize the concept of green development city and encourage the public to participate in green behavior.</p>