Flexure-based　compliant　mechanisms　exhibit　many　attractive　features　for　microvibration　study,　which　have　not　been　fully　explored　in　previous　research.　In　this　study,　a　novel　3-PPRS　flexure-based　compliant　stage　with　six-DOF　is　designed　to　generate　micro-vibrations.　This　stage　is　actuated　through　three　XY　compliant-driven　mechanisms,　which　have　the　advantage　of　no　coupling　effects　between　the　vertical　and　horizontal　motions　of　the　stage.　To　analyze　its　dynamic　behaviors,　a　new　dynamic　stiffness　modeling　method　is　proposed.　This　approach　can　be　used　to　the　modeling　and　analysis　of　general　spatial　compliant　mechanisms.　Subsequently,　the　derived　dynamic　characteristics　are　compared　and　verified　by　finite　element　method.　This　method　can　broaden　the　types　of　micro-vibration　simulators　and　provide　additional　references　for　the　dynamic　analysis　of　spatial　flexure-based　compliant　mechanisms.