从客、货列车运行时对轨道结构产生的损伤 ,作为确定客、货列车分摊线路费用的因素出发 ,建立客、货列车分摊轨道状态修理费用的模型 ;用 AAR大型 NUCARS软件包计算客、货列车对轨道的磨耗指数 ,建立客、货列车分摊钢轨抽换费用的模型 ,进而确定客、货列车分摊线路费用的模型。在对我国铁路系统进行大量调研、采集数据基础上 ,得出客、货列车分摊线路费用比例 ,在铁路上属于首次应用 From the damage caused to the track structure when the passenger and freight trains are operating, as a factor to determine the cost of sharing the passenger and freight trains, a model for assessing the orbit state repairs for both passenger and freight trains is established. AAR large NUCARS software package is used to calculate the passenger and freight The train wear index of the track, the establishment of passenger and freight trains to allocate rail replacement cost model, and then determine the passenger and freight trains to share the cost of the line model. Based on a great deal of research and data collection on the railway system in our country, we can draw the conclusion that the proportion of the cost of the line between passenger and freight trains is the first application on the railway