Abstract
CAPM (Capital Asset Pricing Model) plays an extremely important role in the financial sector. However, since the establishment of the model, the discussion and dispute about it have never stopped. It predicts future data through past market data. However, with the deepening of research, people find that the stock returns in the capital market do not conform to CAPM. The results obtained by the capital asset pricing model may be due to the lack of data validity in the market, which leads to its own inability to carry out relevant tests. In different regions, scholars in some regions have also conducted relevant research on the local capital market. They think that CAPM does not conform to their current regional situation.
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