用几何光学传输矩阵方法分析和讨论了热透镜对铜蒸气激光非稳腔振荡器和放大器输出特性的影响，获得了与实验相符的计算结果，并提出了在振荡一放大链内热透效应的补偿方法． The influence of thermal lens on the output characteristics of copper vapor laser unstable resonator and amplifier was analyzed and discussed with the geometrical optics transfer matrix method. The calculation results accordant with the experimental results were obtained. And the compensation of the heat penetration effect in the oscillating - amplifying chain was proposed method.