Nanosized Gd 2(1–x) Eu 2x Ti 2 O 7 : yV 5+ phosphors were prepared via sol-gel method and characterized with X-ray diffraction, Raman spectroscopy, diffuse reflectance spectra and photoluminescence spectra. Their PL properties were investigated as functions of the Eu 3+ doping concentration and annealing temperature. The results indicated that the as-prepared samples showed a strong emission of Eu 3+ under the irradiation of 303 nm. For Eu 3+ -doped Gd 2 Ti 2 O 7 , the orange emission at 586 nm was the strongest, which was corresponding to magnetic dipole transition 5 D 0 – 7 F 1 due to an energy transfer from host, and the optimum concentration for Eu 3+ was determined to be 4 mol.%. While for Eu 3+ /V 5+ co-doped Gd 2 Ti 2 O 7 annealed at 1000 °C, the spectrum was dominated by 615 nm red emissions corresponding to electric dipole transition 5 D 0 – 7 F 2 . Additionally, the PL intensity of Eu 3+ was enhanced greatly by increasing the annealing temperature. These results are very encouraging for its application in polychromatic displays.