[目的/意义]明确我国营商环境政策发展态势，揭示政策重点的时序演化规律，为后续政策的制定与完善提供数据支撑。[方法/过程]基于2001-2020年中央及各地方政府发布的营商环境政策文本，以两年为一个时间片，通过动态主题模型得到30个营商环境主题的时序演化分布，然后将主题归纳到市场环境、政务环境、人文环境和法律环境4个维度下，进而研究营商环境政策中各维度的主题强度及重点发展趋向。[结果/结论]营商环境政策主要集中于政务环境和市场环境建设，政策力度分配不均，且各维度强度在不同经济地区下差异显著，由此针对营商环境政策提出的建议包括：强化市场导向，减弱政务干预，引入法制规范，等等。

[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, and the intensity of each dimension varies significantly in different economic regions. The resulting recommendations for business environment policies include: strengthening the market orientation, weakening government intervention, regulating the legal system, and so on.