论文选取2007 -2013年上市公司研发投资数据，运用单变量分组差异检验和多变量回归分析的方法，研究了公司控制权以及行业竞争对公司研发投资强度的影响。研究发现国家大股东、法人大股东、股权集中度、国家实际控制人、两权分离度对公司研发投资强度具有负向影响，而股权制衡度、机构持股对公司研发投资强度具有正向影响，对公司研发投资具有一定负向影响,大股东股权对公司研发投资强度有微弱的非线性影响；股权集中度、国家实际控制人、两权分离度对公司研发投资强度具有负向影响，而股权制衡度、机构投资者股权对公司研发投资强度具有正向影响。而公司市场优势对研发强度有负向影响，行业竞争对研发强度具有正向影响；在交互性上，行业竞争可以减轻国家大股东或实际控制人对公司研发投资强度的负向影响，行业竞争与股权制衡在公司研发投资的影响上具有一定替代性。

This paper selects listed companies R&D investment data from 2007 to 2013, uses Univariate grouped difference test and multivariate regression analysis to study the influence of corporate control and industry competition on R&D intensity. The study found that the nation as major shareholder, legal entity as major shareholder, ownership concentration, nation as actual controller, the separation between ownership and control has a negative impact on the company’s R&D intensity. and the equity balance, institutional ownership has a positive impact on the company's R&D investment intensity. and the major shareholder’s equity has a weakly nonlinear effect on R&D intensity. The study also found that the company's market share has a negative impact on the R&D intensity, and the industry competition has a positive effect on R&D intensity. and from the interactive perspective, industry competition can reduce the negative impact of the nation as major shareholder or as actual controller of company on R&D intensity, while industry competition and equity balances has a substitute impact on R&D intensity.