The Capital Asset Pricing Model (CAPM) is a classic financial model used to predict the relationship between risks and returns in the stock market. However, with the increasing complexity of the global market, the CAPM may not be as effective as newer models like the Fama-French Three-Factor Model. Data analysis shows that the CAPM has lower predictive ability compared to the Three-Factor Model, which considers more factors. The Three-Factor Model provides more accurate results that align with real-world situations. This suggests that improvements could be made to the CAPM to enhance its predictive power in today's evolving market landscape.