According　to　the　actual　manufacturing　situation　of　the　roller　coaster　in　China,　Virtual　collaborative　design　and　simulation　system　of　roller　coaster　based　on　C/S　web　model　(VCDSSRC)　is　built　to　settle　the　drawbacks　of　traditional　design,　reduce　the　design　cost　and　improve　the　safety　of　the　products.　While　introducing　the　conception　and　character　of　VCDSSRC,　six　layers＇　architecture　and　function　model　of　VCDSSRC　are　addressed.　The　roller　coaster　dimension-driven　design　subsystem　for　Assembly　and　the　roller　coaster　virtual　prototype　subsystem　in　VCDSSRC　are　introduced　in　detail.　The　design　subsystem　is　a　computer　interaction　subsystem　of　roller　coaster　dimension-driven　design　for　Assembly　which　supports　collaborative　design.　The　virtual　prototype　subsystem　composed　of　the　finite　element　platform,　Collaborative　Simulation　platform　and　the　evaluation　platform　of　the　safety　is　used　to　forecast　and　evaluate　potential　problems　in　product　design,　mechanical　performance　and　machinability.　Two　subsystems　are　managed　by　the　same　database,　feature　database　and　database　management　system,　so　that　data　transfer　efficiency　and　data　security　control　are　raised.　At　the　same　time,　the　reliability,　overall　performance　and　consistency　of　data　transmission　are　preserved,　and　the　data　redundancy　are　reduced.