To　find　out　searching　new　microcirculation　parameters　in　frequency-domain,　a　study　of　frequency　response　of　the　model　of　microcirculation　is　introduced　in　this　paper.　By　using　Bode　Graphic　of　transfer　function,　we　found　two　characteristics　parameters　of　the　model:　damping　ratio　ξ　and　break　frequency　ωno　By　means　of　analysing　the　change　of　ξ　and　ωn,　different　states　of　microcirculation　function　can　be　identified.　The　experimental　results　are　consistent　with　the　analytical　results　of　model.　The　analysis　of　frequency　response　is　of　great　help　in　evaluation　of　microcirculation　function.