By using pro / e and ansys engineering softwares and universal handling application compiled , the paper creates the three - dimensional finite element models of gear system ' s main parts . on the base of the results of system dynamic analysis , the models " structure dynamic analyses are implemented , and then the results of structure natural frequencies , dynamic response and dynamic stress can be obtained 应用pro e及ansys工程软件以及编写的通用处理程序,建立齿轮系统的主要传动件的三维有限元模型,在系统动力学分析结果的基础上,对模型进行了结构动力分析,可得到结构的固有特性、动态响应及动应力结果。