由G. N. Polozhii提出的电磁模型简单表示法是解决由规则网格表示的自伴的有限差分边值问题的一种准分析方法。从其原理看,这种方法同一般有限差分法比较在计算时间方面有相当的节约,并且精度有所提高。为解决电磁模型中二维赫姆霍兹方程问题,我们已经用简单表示法作为新的混合方法的基础。这个混合方法的理论也将予以介绍。对二维问题的初步试算结果表明这种方法能节约大量计算时间和存贮单元。 A simple representation of the electromagnetic model proposed by G. N. Polozhii is a quasi-analytical solution to the finite difference boundary value problem of a self-adjoint represented by a regular grid. From the principle of view, this method with the same general finite difference method in the calculation of time has considerable savings, and accuracy has improved. To solve the problem of the two-dimensional Helmholtz equation in the electromagnetic model, we have used simple notation as the basis for a new hybrid approach. The theory of this hybrid approach will also be introduced. The preliminary trial results on two-dimensional problems show that this method can save a lot of time and memory.