Abstract:Industrial clusters has formed the local industry chain in regional scale rely on the core industry, the rise and fall of industrial clusters will depend on whether driving continuous improvement of the industry chain in clusters. This article constructed the analysis framework of upgrading the industry chain in clusters with the thinking processes of the theory of constraints (TOC). From Determining “whatSneedsSimprovement”, to “whatSitSwould be”, to , this process described the basic logic of the upgrading of the industry in clusters based on TOC. Taking guzhen lighting industry cluster as an example, Using a series of tools from TOC to explain and solve the problem of the industry chain in clusters upgrading, the basic program of Using the TOC’s thinking processes to upgrade the industry chain in clusters was verified.