本文共分四部分:一、前言,简要叙述了沃尔什函数应用的发展过程及对其发展前景的看法;二、扼要介绍沃尔什函数的定义和性质;三、介绍离散沃尔什变换及其快速变换;四、从四个方面介绍沃尔什甬数的应用及其研究进展。 This article is divided into four parts: First, the preface, a brief account of the Walsh function application development process and its development prospects; Second, a brief introduction Walsh function definition and nature; Third, introduce the discrete Walsh transform And its rapid transformation; Fourth, the introduction of Walsh Yong number from four aspects and its research progress.