A novel broadband emission phosphor Sr(3-2x) Li(1+ x) MgV3 O12 : xEu3+ was synthesized by a solid-state reaction method. Then discussed the luminous property under the influence of temperature and doping density of Eu3+, was discussed. X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence spectra were used to characterize the feature of Sr(3-2x)Li(1+x)MgV3O12 : xEu3+. The excitation and emission spectra exhibit that the phosphor of Sr(3-2x) Li(1 + x) MgV3O12 : xEu3+ matches with nearly ultraviolet chip. The emission band covers from 450 to 630 nm, which shows that the phosphor is promising single-phase phosphors for white LED.