The thesis makes an exhaustive description of the transfer principle of road roughness , gives out the transfer equation and weigh coefficient , determine the computation equation of transfer effect factor of roughness and list the examples to show and test the process . to guarantee the perfect ness of thesis and utility of theory of roughness quality 文中对平整度传送规律作了较为详细的阐述,并推导了传递公式,权重系数,用模糊数学的贴近原理确定了传递中影响量的计算式,对影响量的参数作了分级量化叙述,由此,建立了平整度传递影响因素库,并列举了实例进行演示与检验。