本文对预期理论的现状进行研究,了解其发展程度。着重介绍了预期理论发展到积累预期理论的过程,经过比较分析得出二者的差异和预期理论的应用办法,并对预期理论以后的发展方向,表达了自己的看法。 This article studies the status quo of the prospective theory to understand its degree of development. The process of anticipating theory to accumulating expectation theory is emphatically introduced. Through the comparative analysis, the difference between the two theories and the application of expectation theory are expounded. And the author expresses his own opinion on the future direction of the theory of expectation.