With　the　development　of　e-commerce,　the　needs　of　the　virtual　3D　experience　are　growing.　In　this　paper,　the　digital　transmission　technology　of　three-dimensional　display　is　analyzed.　The　Garment　3D　interaction　design　offers　an　entry　point　to　realize　the　user＇s　experience　of　selecting　clothing,　fitting　and　comparison　of　cashier　quickly　in　the　virtual　environment,　by　the　Unity3D　system　tools,　the　virtual　3D　scenes　on　3dmax,　the　virtual　character,　the　movement　and　the　clothing　model.　The　study　on　the　3D　interaction　platform　can　help　improve　the　convenience　ofe-commerce　product　display,　at　the　same　time,　offer　the　consumers　the　experience　of　interactive　creation.