为满足CA488汽车发动机气门和气门座耐磨性的要求及实现国产化，本文从材料选配角度出发，对美国的和国产的气门气门座进行了匹配性能试验，对比分析了不同匹配的气门和气门座的耐磨性能。 In order to meet the requirements of the wear resistance of CA488 automobile engine valve and valve seat and to realize its localization, this paper carried out the matching performance test of American and domestic valve seat from the material matching point of view, and compared and analyzed the different valve and valve matching Wear-resistant valve seat.