After the emergence of the capital market, as a special capital commodity, the performance value of the company (that is, the stock price has different degrees of separation from the real value of the company with the different degrees of development of the capital market). The importance of the capital market makes the research on the real value of the company and its influencing factors increasingly in-depth. The author's theoretical construction ideas are as follows: firstly, this paper expounds the theoretical significance of enterprise's real value from the perspective of economic basic theory, and lays the foundation for the analysis of corporate value and its influencing factors. Then it explores the corporate value theory formed after the emergence of capital market, including efficient market hypothesis and signal transmission theory. Then it shows that this paper analyzes the company value and its influencing factors from the perspective of the overall value of the company.