BACKGROUND:　The　body　area　networks　(BAN)　are　built　by　many　wearable　sensors　to　record,　monitor　or　control　the　vital　signals　within　the　human　body　continuously.　Human　body　communication　(HBC)　is　a　novel　physical　layer　method　to　implement　the　BAN　with　low　power　consumption,　low　radiation,　and　strong　anti-interference.　However,　the　most　existing　HBC　rarely　consider　the　situation　in　which　multiple　sensors　transmit　data　at　the　same　time.　OBJECTIVE:　The　aim　of　this　paper　is　to　investigate　the　feasibility　of　frequency　division　multiplexing　for　human　body　communication　multiplex　data　transmission.　METHODS:　The　signal　was　injected　into　the　human　body,　and　the　human　channel　gain　was　measured　by　the　spectrum　analyzer.　Two　frequency　signals　were　selected　with　smaller　gain　to　design　the　transceiver.　The　transmitter　used　OOK　modulation　technology　to　design　each　functional　unit,　and　the　receiver　recovered　the　original　signal　with　a　non-coherent　demodulation　method.　RESULTS:　The　experimental　results　show　that　after　the　dual　signals　were　transmitted　through　the　human　body,　the　receiver　could　recover　the　original　signal　correctly.　In　both　static　and　dynamic　situations,　even　if　the　transmission　rate　was　as　high　as　115.2　kb/s,　the　bit　error　rate　was　only　10(-4)　.　CONCLUSIONS:　The　frequency　division　multiplexing　scheme　can　be　selected　for　multi-channel　data　transmission　in　human　body　communication.