The　post-disaster　road　monitoring　system　provides　an　interesting　application　area　for　wireless　sensor　networks.　After　the　earthquake,　roads　are　subject　to　be　blocked　by　landslides.　The　people　require　a　scalable　and　low-cost　technology　for　getting　real-time　dynamic　data　about　road　available　because　aftershocks　occur　continuously.　Wireless　sensor　networks　are　a　promising　candidate　to　fulfill　these　requirements.　Then　the　post-disaster　road　monitoring　system　solution　is　put　forward.　In　this　system,　the　ordered　arrangement　of　node　number　greatly　reduces　the　complexity　of　node　location　and　provides　the　premise　and　guarantee　for　designing　efficient　route　algorithm　for　the　system.　The　algorithms　of　route　established　and　route　forwarding　are　designed　for　the　arrangement　and　transmission　characteristics　of　nodes,　then　are　more　efficient　than　general-purpose　route　protocol.