Characterization　of　the　human　body　channel　is　a　necessity　to　pave　way　for　practical　implementation　of　intrabody　communication　(IBC)　in　body　area　networks　(BAN).　In　this　paper,　a　circuit-coupled　finite　element　method　(FEM)　based　model　is　proposed　to　represent　the　galvanic　coupling　type　IBC　on　human　arm.　In　contrast　with　other　models　for　IBC,　both　the　finite　element　method　and　the　parasitic　capacitances　between　electrodes　are　taken　into　account　in　the　modeling.　To　understand　the　characteristics　of　IBC,　simulations　with　multiple　frequencies,　excitation　voltages,　channel　lengths　and　values　of　parasitic　capacitors　are　carried　out　using　the　model.　The　current　density　and　electric　field　distribution　in　different　human　tissues　reveal　an　insight　into　signal　transmission　path　through　the　human　body　intuitively.　The　body　channel　gain　presents　a　band-pass　property　after　adding　the　parasitic　capacitances　into　the　model,　while　it　performs　an　increasing　characteristic　with　the　frequency　before　the　adding.　Finally,　a　galvanic　coupling　IBC　measurement　setup　is　fulfilled,　and　the　outcome　shows　a　good　agreement　with　the　proposed　model.　It　is　indicated　that　the　parasitic　capacitances　are　the　major　factors　to　cause　the　band-pass　and　affect　the　bandwidth,　and　they　should　not　be　neglected　in　the　real　IBC　applications.　©　2020,　Electromagnetics　Academy.　All　rights　reserved.