The stock market attracts many investors because of its high risk and high return characteristics. Therefore, it is of strong practical value to find a scientific and effective evaluation method for listed companies and explore its relationship with stock prices. This article combines the financial and non-financial data of listed companies from 2020 to 2023 to provide a composite score for companies based on the improved Wall Marking Way, and uses the Pearson correlation coefficient and regression analyses to investigate the correlation between the score on stock value. It is found that there is a significant positive correlation between comprehensive score and stock price, which proves the feasibility of the scoring method. On this basis, this article further explores the relationship further through regression analysis. The experimental results provide a scientific and reasonable index for evaluating the comprehensive ability of enterprises, and also provide an important reference basis for investors' investment decisions.