该文计算和分析了平面波垂直照射下，导电圆柱及其覆盖有耗介质后的ＲＣＳ．提出了导电圆柱及其覆盖有耗介质后，爬行波电流传播常数以及幅度的数值计算方法．该方法不仅克服了低频时，几何绕射法对导电圆柱表面爬行波传播常数计算精度差的缺陷，而且解决了几何绕射法难以求解的有耗介质包层的导电圆柱表面爬行波电流传播常数的数值计算，特别是解决了爬行波电流模的幅度计算问题． In this paper, the conductive cylinder and its RCS covered with dissipative medium are calculated and analyzed under the vertical illumination of plane wave. The numerical calculation method of creeping wave current propagation constant and amplitude after the conductive cylinder and its covered dielectric is proposed. This method not only overcomes the shortcomings of geometric diffraction method, such as the low diffraction efficiency, on the calculation accuracy of creep wave propagation constant on the conductive cylindrical surface, but also solves the problem that the creep current propagation constant Numerical calculation, in particular, to solve the problem of calculating the magnitude of creeping wave current mode.