通过综合应用麦氏理论和目前国内公认的缓和曲线评价准则，对比研究了几种缓和曲线，指出赵氏缓和曲线是一种优良的缓和曲线，可在高等级公路的测设中推广应用。 Through the combination of Maxwell’s theory and the currently accepted assessment criteria for the easement curve, several easing curves are compared and analyzed. It is pointed out that the Zhao’s easing curve is an excellent easing curve that can be applied in the survey of high-grade highways.