机车车辆零部件采用复合材料具有减轻自重、增加载货重量、减少维护费用等诸多优点。介绍了美国和欧洲国家在制造机车车辆零部件时开发利用复合材料的现状，预测了其发展前景。同时指出各铁路公司采用复合材料的着眼点，除其本身的材料特点外，主要视其经济效益而定。 The use of composite materials for rolling stock components has many advantages such as reducing weight, increasing load weight, and reducing maintenance costs. The present situation of the development and utilization of composite materials in the manufacture of rolling stock parts by the United States and European countries is introduced, and its development prospect is forecasted. At the same time, it points out that the focus of composite materials used by railway companies depends mainly on their economic benefits, in addition to their own material characteristics.