Abstract
Based on the relevant data of A-share listed high-tech enterprises in Shanghai and Shenzhen in 2014-2018, the relationship between ownership structure and innovation input is empirically studied according to the principal-agent theory and Information asymmetry theory, and combined with the intermediary effect model, further analysis of internal control in the relationship between the intermediary role. It is found that the degree of equity concentration has a negative correlation with innovation input, but has a positive correlation with internal control. The degree of equity concentration can weaken the negative influence on innovation input through the positive influence on internal control, it can be seen that internal control plays an intermediary role in the relationship between ownership concentration and innovation input. The research results can provide enlightenment for high-tech enterprises to optimize the ownership structure, improve the effectiveness of internal control, enhance innovation input and enhance the competitive advantage of science and technology.
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