To　provide　a　more　effective　and　convenient　method　for　visualizing　the　meridian　point,　a　meridian　detection　and　display　system　with　the　host-slave　PC　is　developed.　The　host　PC　measures　the　electrical　impedance　on　skin　with　multi-channel　impedance　detector,　and　the　slave　PC　acquires　the　3-Dimensional　(3D)-coordinate　of　all　electrode　probes　on　skin　using　the　magnetic　tracker.　Then,　by　using　multi-threading　technology,　the　host　PC　matches　the　electrical　impedance　of　each　channel　with　the　3D-coordinate　of　all　probes　respectively,　selects　some　channels　as　the　candidate　channels　according　to　the　lower　impedance　characteristic　of　meridian,　and　uses　the　cost　function　to　select　the　accurate　meridian　place　from　the　candidate　channels.　Finally,　the　3D-coordinate　of　meridian　can　be　projected　onto　the　2D　image　which　is　taken　from　skin　using　camera　according　to　the　camera　projection　matrix　H　which　is　computed　by　the　method　of　combining　＇Zhang＇　and　graphic　transformation.　With　the　moving　of　the　electrode　probe,　the　meridian　line　can　be　display　on　the　2D　image　of　skin.　The　experiment　results　show　that　the　detection　error　of　impedance　is　less　than　0.2%,　and　it　displays　the　human　meridian　precisely　and　efficiently　with　the　actual　human　body　image　in　real　time.　Copyright　©　2012　American　Scientific　Publishers　All　rights　reserved.