Sr0.7Ca0.3－2xMoO₄:Eux3+ Nax⁺ red phosphor materials for white LEDs were s ynthesized by the high temperature solid state reaction.The samples were characterized by means of X- ray diffraction and photoluminescence (PZ) spectra.The luminescent properties of Sr0.7Ca0.3－2xMoO₄:Eu³⁺xNax⁺ with var ious concentrations of Eu³⁺ are investigated in detail.The XRD pantterns show that the phosphors heated at 1000℃ for 9h are pure SrMoO_4phase. The results indicate that Sr0.7Ca0.3-2xMoO ₄: Eux³⁺ Nax⁺ phosphors can be excited by 393nm and 463nm light.The emission spectra exhibit the most intense emission at 611nm and 615nm,especia lly the later which is corresponding to the ⁵D₀→⁷F₂ transition of the Eu³⁺. Compared with SrMoO₄:Eu3+ Na⁺,the emission intensity of Sr0.7Ca0.3－2xMoO₄: Eux³⁺Nax⁺ is increas ed obviously.Considering the influence of Eu³⁺ and Na⁺ concentrations on the luminescent property, the highest emission intensity at 614nm is exhibited when x is 0.07.Moreov er,the CIE chromaticity of Sr0.7Ca0.3－2xMoO ₄:Eux³⁺Nax⁺ excite d by 393nm light is analyzed.When the x for Eu ³⁺ and Na⁺ is 0.02, phosphors of the samples turn from pink to red.These results indicate that th e Sr0.7Ca0.3－2xMoO₄:Eux³⁺Nax⁺ could be an attractive candidat e phosphor in white LED applications.