The　SrLa(1-x)AlO(4):xDy(3+)　phosphor　was　synthesized　by　high　temperature　solid-state　methods.　The　luminescent　properties　of　the　phosphor　were　investigated.　The　emission　spectrum　of　SrLa(1-x)AlO(4):xDy(3+)　phosphor　shows　several　bands　at　484　rim,　578　nm　and　669　nm　under　the　excitation　of　the　352nm.　The　effects　of　Dy(3+)　content　on　the　luminescent　intensity　of　484nm　of　the　phosphor　were　investigated　under　the　excitation　of　the　365nm.　The　result　shows　that　the　optimum　concentration　of　Dy3+　in　SrLa(1-x)AlO(4)　is　x=3mol%.　The　concentration　quenching　mechanisms　are　the　dipole-dipole　interaction.