Purpose　Randomness　of　fluid　and　structure　properties　inherently　exists　in　actual　pipes.　The　waves　of　parameters　may　play　a　significant　role　in　the　pipeline　dynamic　characteristics.　However,　the　vibration　analysis　of　pipe-conveying　fluid　is　usually　done　by　considering　the　deterministic　parameters.　To　overcome　the　limitation,　a　stochastic　dynamic　model　is　proposed　for　the　dynamic　characteristics　analysis　of　pipe-conveying　fluid.　Methods　Considering　the　uncertain　fluid　and　structure　properties　described　as　one-dimensional　stochastic　field　function,　a　stochastic　dynamic　pipeline　model　based　on　the　stochastic　finite　element　is　presented　for　three-dimensional　dynamic　characteristics　analysis　in　this　paper.　A　stochastic　analytical　formula　is　deduced　to　obtain　the　statistical　results　of　the　structural　dynamic　characteristics　and　responses　of　pipeline　with　random　properties.　Results　The　statistics　obtained　from　the　presented　model　are　compared　with　the　prior　experimental　data　and　Monte　Carlo　simulation　so　as　to　validate　the　presented　model　and　analysis　method,　and　good　agreement　is　obtained.　Effects　of　structure　and　fluid　randomness　are　studied　in　linear　and　nonlinear　pipeline　systems,　respectively.　Conclusion　It　is　found　that　the　effects　of　random　properties　on　pipeline　eigenvalue　and　dynamic　response　are　significant,　especially　the　influences　of　the　random　elastic　modulus,　density　and　flow　velocity.