Abstract: When Mn²⁺ doped to some interstitial substances,luminescence was very weak.So the appropriate sensitized substance was choosed to increase luminescence efficiency,The researchful purpose validate that Eu²⁺ is favorable sensitized substance of Mn²⁺.CaZn₂（PO₄）2:Eu²⁺,Mn²⁺ phosphor was synthesized by high temperature solid-state reaction,and its luminescence properties were investigated.When the sample doped single Eu²⁺,its emission peak locating at 504nm,which correspond to 5d-4f transition of Eu²⁺.The excitation peak locating at 380nm,which correspond to f-d broadband absorption of Eu²⁺.The sample which doped single Mn²⁺ was not luminescent,when it doped together Eu²⁺,Mn²⁺: 673 nm emission peak of Mn²⁺ appeared,the phosphor show excellent red emission.It is suggested that Mn²⁺ ion is sensitized strongly by Eu²⁺ ion,The effect of the molar concentration of Eu²⁺ and Mn²⁺ on excitation and emission spectra were also studied.It demonstrated that the energy transfer between Eu²⁺ and Mn²⁺ is due to resonance energy transfer in CaZn₂（PO₄）2:Eu²⁺,Mn²⁺.