介绍一种精确计算多层平面介质波导归一化正交辐射模的方法．在全辐射模的情况下，为了保证模的正交性，给出了准奇模和准偶模的确定方法．这些方法适用于计算机编程，为模传播法的建立和实际应用奠定了基础．本文最后给出几个应用的实例． A method for accurately calculating the normalized orthogonal radiation pattern of a multilayer planar waveguide is presented. In the case of full radiating mode, in order to ensure the orthogonality of the modes, the methods of determining quasi-odd modes and quasi-even modes are given. These methods are suitable for computer programming, which laid the foundation for the establishment and practical application of the mold propagation method. This article gives several examples of applications.