针对我国多式联运目前普遍存在的信息化水平不高，缺乏相应的决策支持系统的现状，首先对多种运输方式的运输特性进行了分析，通过对比，得出了运输方式的选择依据；然后建立了多式联运虚拟运输网络；最后在运输方式选择依据和运输网络的基础上得出了多种运输方式组合优化模型，并给出了求解算法。

To solve the prevalent problem of the low informatization level and lack of relevant decision support systems for the multimodal transport in China, transportation characteristics of various transportation modes are analyzed firstly, and choice basis is put forward after comparison. Then a virtual transportation network of multimodal transport is set up. Finally, a combined optimization model for various transportation modes is deduced based on the above and algorithm is also proposed.