In　this　paper,　a　frequency　analysis　for　the　microcirculation　model　is　introduced　to　find　new　microcirculation　parameters　in　the　frequency　domain.　By　using　Bode　Plot　of　transfer　function,　we　found　two　characteristic　parameters　of　the　model:　damping　ratio　xi　and　break　frequency　omega(n).　By　analyzing　the　variation　of　xi　and　omega(n),　it　enables　us　to　have　better　understanding　of　different　states　of　microcirculation.　At　low　damping,　0　=　1,　the　state　of　microcirculation　will　be　worse　and　worse　along　with　the　descending　of　the　omega(n).　The　results　of　experiments　on　120　subjects　are　consistent　with　the　analytical　results　of　the　model.