文中比较了虚拟仪器与传统仪器的不同,介绍了虚拟仪器的概念、特点及其硬件和软件开发环境。通过选用合适的硬件和软件,建立了汽车偏频测试系统,并以某轻型客车为研究对象进行了偏频测量,试验结果与传统仪器相符,表明该系统正确、有效。虚拟仪器技术为汽车测试提供了一条新思路。 The article compares the difference between virtual instrument and traditional instrument, introduces the concept, characteristics and hardware and software development environment of virtual instrument. By selecting the appropriate hardware and software, the system of the car offset frequency measurement is established, and the bias frequency measurement is carried out with a light bus as the research object. The test results are consistent with the traditional instruments, which shows that the system is correct and effective. Virtual instrument technology provides a new idea for automotive testing.