This article discusses the role and impact of private equity funds in the mergers and acquisitions of listed companies. It introduces the historical development of private equity funds, the domestic and international M&A background, as well as the research purpose and significance. The section exploring the role of private equity in the mergers and acquisitions of listed companies discusses the methods of private equity intervention and financial support, along with the relationships and decision-making processes involving other investors. Additionally, the article discusses the impact of M&A funds on market activity and evaluates market price fluctuations. The article delves into the discussion and prevention of risks, covering positive effects and collaborative advantages, regulatory challenges in new models, negative effects and risks, as well as challenges and cooling trends in the models. Future regulatory efforts should focus on strengthening the scrutiny and disclosure of related-party transactions, consolidated financial statements, and announcement disclosures.