本文以《中华人民共和国反垄断法》的实施为研究对象，探讨了反垄断政策对企业高质量发展的影响。通过构建双重差分模型，选取2000年至2023年间沪深两市A股上市公司为样本，实证分析反垄断法施行后的企业全要素生产率变动及其作用机制。研究发现，反垄断法的实施显著提升了企业的全要素生产率，从而促进了企业的高质量发展。其作用机制主要体现在缓解融资约束，提升企业融资便利性。此外，反垄断法对国有企业的生产率提升作用更为显著。研究还通过稳健性检验和异质性分析进一步验证了反垄断法的积极效应。本文的研究为推动中国经济高质量发展提供了理论支持，并对相关政策提出了建议，特别是加强反垄断法的执行力度，优化市场资源配置，并推动国有企业改革。

This study examines the impact of anti-monopoly policies on the high-quality development of enterprises by focusing on the implementation of the Anti-Monopoly Law of the People’s Republic of China. Using a difference-in-differences (DID) model, this paper selects A-share listed companies in Shanghai and Shenzhen stock exchanges from 2000 to 2023 as the sample to empirically analyze changes in enterprise total factor productivity (TFP) and its underlying mechanisms after the implementation of the Anti-Monopoly Law.

Findings reveal that the implementation of the law significantly improves enterprise TFP, thereby promoting high-quality development. The mechanism primarily operates through alleviating financing constraints and enhancing corporate financing accessibility. Additionally, the law’s positive effect on productivity is more pronounced in state-owned enterprises (SOEs). Robustness tests and heterogeneity analysis further validate the law’s positive effects.

This research provides theoretical support for advancing China’s high-quality economic development and proposes policy recommendations, particularly strengthening enforcement of anti-monopoly laws, optimizing market resource allocation, and accelerating SOE reforms.