有效市场假设揭示了股票价格反映会计信息，并且随市场的有效程度不同，股票价格所反映的信息量也不同。但证券市场上“异象”的存在使得人们开始更加关注股票的内在价值，市价／账面净值模型（ＭＩＢ）便为投资者提供了一种估计股票内在价值的方法，其所反映的股票内在价值和股票市场价格的差异，对会计准则制定机构改进现有准则，完善信息披露制度也颇具价值。 Efficient market assumptions reveal that stock prices reflect accounting information and that stock prices reflect different amounts of information as markets operate more effectively. However, the existence of “vision” in the securities market makes people begin to pay more attention to the intrinsic value of the stock. The MIB provides investors with a way to estimate the intrinsic value of the stock, which reflects the intrinsic value of the stock And the stock market price differences, the accounting standards-setting agencies to improve the existing guidelines, improve the information disclosure system is also of great value.