The　lifeline　disaster　prevention.　and　mitigation　engineering　is　a　multi-system　management　process.　The　comprehensive　information　of　lifeline　engineering　being　quickly　obtained　after　earthquake　may　help　us　ensure　the　fast　and　efficient　rescue,　thus　one　building　information　modeling　of　urban　lifeline　disaster　prevention　and　mitigation　will　be　proposed　based　on　multi-　dimensional　and　micro-information　storage.　The　model　is　divided　into　the　following　four　modules:　data　integration　module,　establishment　and　preliminary　evaluation　module,　analysis　of　function　module,　and　integrated　application　module,　which　will　help　implement　sharing　information　resources　for　different　tasks.　In　this　model　the　factors　that　affect　planning　before　the　earthquake　and　recovery　after　earthquake　are　considered,　characteristics　of　application　modes　are　analyzed　from　the　following　five　aspects:　location　and　analysis,　team　working,　maintenance　information　management　in　life　cycle,　disaster　prediction　and　post-disaster　recovery　simulation,　management　of　underground　disaster　space.　Then　a　comprehensive　urban　lifeline　disaster　management　platform　is　proposed　based　on　the　building　information　modeling　as　the　key　link　which　is　characterized　by　integrity,　visibility　and　collaboration.　In　this　paper,　the　application　is　introduced　by　taking　one　city＇s　building　information　modeling　of　water　supply　network　disaster　prevention　and　mitigation　as　an　example.　The　results　indicate　that　this　model　is　practical　to　provide　strategic　decisions　for　disaster　prevention　and　mitigation.