Omnidirectional　M-mode　echocardiographic　image　is　composed　of　a　set　of　sequential　gray-points.　which　are　fixed　on　the　sampling　line,　represents　the　movement　track　of　cardiac　structure　caused　by　hemodynamics　together　with　cardiac　muscle　bounce([1]).　Based　on　the　principles　above,　we　present　a　method　of　nearly　automated,　adaptive　and　hierarchical　for　extracting　its　movement　track.　We　employ　a　series　of　strict　conditions,　layer　by　layer　to　guide　the　further　extraction　of　track　points　where　edge　character　is　not　so　obvious　even　fuzzy.