Purpose/Significance Clarifying the development trend of China's business environment policies, and revealing the time-series evolution law of the policy priorities are to provide data support for the formulation and improvement of subsequent policies. Method/Process Based on the business environment policy texts issued by the central and local governments from 2001 to 2020, with two years as a time slice, this article extracted time series evolution distribution of 30 business environment topics through the dynamic topic model, and summarized the topics were into the four dimensions of market environment, government environment, humanistic environment and legal & policy environment, and then analyzed the theme intensity and key development trends of each dimension in the business environment policy. Result/Conclusion The result shows that, business environment policies mainly focuses on the construction of government environment and market environment, the distribution of policy strength is unbalanced,