In　this　work,　novel　phosphors　Na5Gd(WO4)(4):　Tb3+/Yb3+　and　Na5Gd(WO4)(4):　Tb3+/Er3+/Yb3+　phosphors　were　synthesized　by　the　solid　state　reaction　method.　The　photoluminescence　properties　were　investigated.　The　introduction　of　Er3+　to　NGW:　Tb3+/Yb3+　was　used　to　modify　the　chromaticity　coordinates,　then　providing　a　good　color　tunable　property.　The　change　in　the　chromaticity　coordinates　induces　the　shift　of　emission　color　from　yellow-green　to　blue-green　for　NGW:　Tb3+/Er3+/Yb3+　as　the　temperature　increases.　All　the　results　indicate　that　the　NGW:　Er3+/Tb3+/Yb3+　phosphors　may　be　used　as　optical　temperature　sensing　materials.