文中主要研究了车辆开发阶段NVH(Noise,Vibration,Hashness)方面出现异常现象的解决方法。运用频谱分析法和分别运转法,通过对车辆定置、怠速时车内出现嗡鸣声异响的分析,成功找出车内异响的噪声源为油泵的工作噪声,为车辆开发提供了有力帮助。 In this paper, we mainly study the solution to the abnormal phenomenon of NVH (Noise, Vibration, Hashness) in the vehicle development stage. Using spectrum analysis and operation method respectively, through the analysis of the buzzing noises in the car during idling, the noise source that successfully found out the abnormal sound in the car is the working noise of the pump, which provides a great help to the vehicle development .