Intra-body　communication　(IBC)　is　an　alternative　method　for　communication　of　devices　in　body　area　networks.　The　existing　research　is　mainly　focused　on　on-body　(OB)　channel　modeling,　transceiver　design,　and　in　vivo　experiments.　However,　the　difficulty　arises　in　carrying　out　long-term　in　vivo　experiments　for　investigating　the　human　channel　characteristics　in　OB　or　in-body　(IB)　IBC　channels,　since　the　repeatability　of　in　vivo　experiments　shows　inconsistency.　In　this　paper,　a　multi-layer　leg　model　with　realistic　shape　was　designed　based　on　visible　human　data　(VHD)　images.　Then,　novel　mixtures　with　the　approximate　conductivities　of　leg　tissues　were　designed　and　used　to　fabricate　leg　phantoms,　via　several　pairs　of　3D-printed　molds.　Finally,　the　efficiency　of　the　leg　phantoms　was　validated　by　in　vivo　experiments　through　the　high　similarity　of　voltage　gain　versus　distance　characteristic　of　the　OB　channel.　Both　conditions　featured　the　same　trend,　that　is,　they　decreased　first　and　then　stabilized.　The　leg　phantom　was　adopted　to　explore　the　channel　characteristics　of　the　IB　channel.　The　results　indicate　that　the　voltage　gain　versus　distance　curve　of　the　OB　to　IB　channel　was　nearly　reciprocal.　In　summary,　the　VHD-based　leg　phantom　provides　a　reusable　experiment　platform　for　the　IBC　research,　especially　for　the　case　of　implantable　channels.　©　2016　IEEE.