The construction of business environment is an important measure to implement the governance strategy of the Communist Party of China in the new era for Xinjiang, China. This paper, based on field research and text analysis, constructs an evaluation system for fiscal, tax, and financial preferential policies for enterprises from three aspects: policy synergy, completeness, and intensity and employs the grey correlation analysis to explore the impact of fiscal, tax, and financial preferential policies for enterprises on the construction of the business environment. The results indicate that Xinjiang's fiscal, tax, and financial preferential policies for enterprises have a high degree of synergy, and the degree of policy improvement and intensity are increasing in fluctuations. These policies can effectively promote the construction of local business environments. However, further improvement is needed in the diversification of policy tools and the implementation of preferential policies for enterprises. At the same time, it is necessary to deeply explore new models of fiscal, tax, and financial preferential policies that fully leverage the bilateral effects of policies and markets at special time points and events.