The red phosphor K₂MgSiO₄:Eu³⁺ which can be effectively excited by ultraviolet and blue light was synthesized by high temperature solid state reaction,and its luminescent characteristics were also investigated.The principal crystalline phase of the samples is K₂MgSiO₄.The excitation spectra of the sample consis t of O²-→Eu³⁺ charge transitions (200~350nm) and Eu³⁺ ion excitation peak (350~500nm).The maximum peak appears at 396nm and the second peak appears at 466nm. The phosphor presents several emission peaks under 396nm,and 466nm excitation, respectively, which correspond to the ⁵D₀→⁷FJ(J=0,1,2,3,4) transition of Eu³⁺,and the strongest emi ssion is located at 619nm.The luminescent intensity increases with the increase of Eu³⁺ content.The concentration quenching does not o ccur.The Commission Internationale de L′Eclairage (CIE) coordinates of K₂MgSi O₄:Eu³⁺ are very close to the National Television Standards Committee (N TSC) standard.The temperature quenching occurs with increasin g temperature,but there is no emission peak red-shift.Fluorescence lifetime of this sample is about 0.53508ms.