A novel Ga₂O₃-GeO₂-Na₂O glass series were prepared by melting quench ing method.The differential scanning calorimetry,ultraviolet (UV)/visible (vis) /near-infrared (IR) transmittance, Raman and visible-infrared luminescence spectra under the excitation of 980nm of the gallogermanate glasses were measured.Meanwhile,the optical band gaps of Ga₂O₃-GeO₂-Na₂O glass samples were calculated by the Tauc equation. It is found that the presence of Ga₂O_3can:improve the thermal stability ,shorten the ultraviolet cutoff band of host glasses and increase the direct and indirect optical band gaps of glass samples.Analysis of Raman spectra shows that the intensity of Raman peaks at 447cm－1 reduce,and the peak positions shift to the high frequency direction with the increase of Ga₂O_{3substitution} for GeO_2content.Meanwhile,830cm－1 and 933cm－1 peaks shift to low frequency, and the maximum phonon energy of glass system decreases.It is found that the pro per amounts of the Ga₂O_{3substitution} for GeO_2increase the 1.53μm emission intensities and reduce th e upconversion intensity.