本文在比较直接积分法（DIM）和表面辐射图（SRP）法的基础上，提出了用修正表面辐射圈（MSRP）的新方法来计算任意形状曲面上波导辐射单元的互耦。通过对圆柱阵单元的计算表明，MSRP法既具有DIM法的准确性，又具有SRP法的简单件，同时能方便地处理任意指向（极化）单元的互耦问题。 Based on the comparison of direct integral method (DIM) and surface radiation pattern (SRP), this paper proposes a new method to correct the mutual coupling of waveguide radiating elements on an arbitrary shape surface by using a modified surface radiation circle (MSRP). The calculation of cylindrical array element shows that the MSRP method has both the accuracy of DIM method and the simple element of SRP method and can easily handle the mutual coupling problem of any pointing (polarization) element.