Diamond Model plays a key role in improving the core competitiveness of sports industry; it also has a positive evaluation effect on the constructive direction of the core competitiveness. These two aspects exert positive effects on the overall development environment and goals of sports industry, thus more objective evaluation should be made on the influential factors. This paper first focuses on the basic overview of the Diamond Model, exploring effectively the model construction from influential factors. Then combined with the sports industry policies of our country, this paper analyzes and summarizes the limitations of the policies, thus enforcing the self-evaluation effect of the Model and achieving the ultimate goal of this research. Focusing on the analysis of two independent variables, one is government, the other, the chance, this paper analyzes the rational allocation of resources of the sports industry by the government, thus making the policy more adaptive and aim-focused and making the Model evaluate objectively on the core competitiveness of sports industry. At the same time, by this way this paper will allow the Model to play a strong support role in the construction of sports industry bodies, thus providing solid theory foundations for the Model to maximize its application value and self function.