This　paper　is　concerned　with　the　wellposedness　of　the　nonlinear　Klein-Gordon-Schrodiger　(NKGS)　equations　under　multi-interactions　in　3　dimensions.　By　using　the　vanishing　viscosity　techniques　and　the　compactness　arguments,　we　establish　the　existence　of　the　global　finite　energy　solutions　for　the　NKGS　equations.　In　addition,　by　introducing　a　time　piecewise　function　with　integral　form,　we　prove　uniqueness　and　continuous　dependence　on　the　initial　data.　(C)　2014　Elsevier　Inc.　All　rights　reserved.