为研究螺旋波纹波导的色散曲线特性，利用阻抗微扰法对螺旋波纹波导色散方程进行求解，并分析了波导尺寸的变化对色散特性的影响。针对目前采用谐振法仿真色散曲线时存在模式分割以及谐振点的选取问题，利用行波法(不属于波纹波导理论体系下的新方法)对不同频率下的色散值进行仿真求解。研究结果表明，基于行波法仿真得到的色散曲线与由Matlab计算得到的理论色散曲线吻合度好，计算过程不涉及波纹波导理论体系下谐振点的选取问题，相比传统的谐振法，整个仿真计算过程更简洁。

The impedance perturbation method is utilized to solve the dispersion equation of spiral waveguide in order to study the dispersion curve characteristics of spiral corrugated waveguide, and the influence of waveguide size on dispersion characteristics is analyzed. There are some problems about mode segmentation and the selection of resonance points when simulating the dispersion curves by resonance method, so a new solution of traveling wave method is employed to simulate the dispersion curve among different frequencies. The results show that the dispersion curves obtained by traveling wave method are in good agreement with the theoretical dispersion curves calculated by Matlab, and the calculating process does not involve the selection of resonance points in the corrugated waveguide theory system. Compared with that of the traditional resonance method, the simulation process is also more concise.