A series of mixed molybdate phosphors of Ca0.7Sr0.3Mo 1－xWxO₄:Eu³⁺ which based on Ca0.7Sr0.3MoO_4and activated by Eu³⁺ were prepared by the hi gh temperature solid-state method. In this paper,we study the phase structure and luminescence properties of phosp hor by testing excitation spectra,emission spectra and X-ray diffraction (XRD). The experimental results show that the brightness of Ca0.7Sr0.18Mo1－ xWxO₄:0.08Eu³⁺ red phosphor dope d with W⁶⁺ can be improved,and its optimal doping concentrati ons is 20%.With the W⁶⁺concentration of 20%,the diffraction peaks coincide with Ca0.7Sr0.18Mo 0.8W0.2O₄:0.08Eu³⁺ samples of those of CaMoO₄(29-0351) standard card.Appropriate addition of charge compensation agents Li₂CO₃, Na₂CO₃,K₂CO_3can improve the brightness of Ca0.7Sr0.18Mo 0.8W0.2O₄:0.08Eu³⁺ phosphor.When the amount of Li⁺ is 2%,the luminescence property is the best.The phosp hors are analyzed by chromaticity coordinate,the result shows that the chromaticity coordinates of the phosphors are up to the national standard,and are more closer to the standard red than those of Y₂O₃:Eu³⁺ which is the commercial red phosphors.So those red-emitting materials show good potential to become the red commercialization phosphors.