This paper gives a systematical research on high frequency distortion performance of vehicle shock absorber . we prove that the cavitation specific property is another basic cause of high frequency distortion of vehicle shock absorber . we put forward the new utility engineering theory about saturated a un - saturated high frequency distortion clearly . we also sum up the technology norms of the test of shock absorber cavitation specilic property on domestic equipment comprehensively 该文对车辆筒式减振器高频畸变特性进行了系统研究.揭示并论证了泡沫特性是筒式减振器高频畸变的另一类重要基本成因，明确地提出饱和与不饱和高频畸变等工程实用新概念.文中还对使用国产设备进行减振器泡沫特性台架试验的技术路线进行了归纳
