Research On The Relationship Among Over-investment, Audit Quality And Corporate Risk Of Listed Companies Based On Big Data——Based on the Empirical data of listed companies in China

At present, most companies in China have the problem of inefficient investment, and inefficient investment will bring certain business risks to the enterprise. In addition, the quality of external auditing, as a part of the company's external governance mechanism, also has an impact on the investment efficiency of listed companies and corporate risks. Based on big data research, this paper selects data samples of Chinese A-share listed companies from 2014 to 2018, and uses STATA to process the data to study the impact of overinvestment on corporate risks. At the same time, considering the influence of external independent audit, this paper try to verify whether audit quality will have a negative moderating effect. In addition, this article combines China's system to study whether overinvestment and audit quality have different impacts on corporate risks for companies with different property rights. Through the use of big data analysis and computer data processing analysis, this paper finds that audit quality has a restraining and regulating effect on corporate risks caused by corporate over-investment, and this effect has certain differences in companies with different property rights