效用理論作為一種融合客觀性的計量與主觀性的心理及行為之規範性的決策理論 ，發展至今已有大量的文獻資料，然而他們的工作基本上是出於各自的目的，按照他們的需 要，側重於某一方面發展。本文的目的是對該理論作較系統、嚴謹、綜合地介紹。本文分為 以下四大部份：（1）效用理論的產生與發展。（2）效用理論的數學處理。（3）風險與保 險的效用理論。（4）結束語。

　　　　　Utility theory as normative decision theory which combines objective measure with subjective psychology and behavior is developed until now that has had a great amount of literature. However, the development of their works were generally partial to a certain aspect, and started from the purpose for their own requirement. The aim of this paper is to introduce utility theory with more systematic, rigorous and synthetic way by mathematical language. This paper consists of four parts: (1) Generation and development of Utility Theory. (2) The mathematical treatment of Utility Theory. (3) Utility Theory of Risk and Insurance. (4) The concluding Remarks.