Ce³⁺- doped Gd₂O₃ based oxyfluoride scintillation glasses are prepared through high-temperature meltquenching method under CO atmosphere. The effect of BaF₂ on the density, optical properties and scintillation properties are studied. Luminescence intensity of scintillation glasses and BGO crystal excited by ultraviolet (UV) and X- ray are compared. The result shows that the density can be increased by BaF₂. The more the BaF₂ concentration is, the higher the density is. BaF₂ can enhance the UV- excited luminescence and X- ray excited luminescence. The optimum mole fraction of BaF₂ is 15%. Due to charge transferring quenching and concentration quenching of Gd³⁺ , the UV-excited luminescence and X-ray excited luminescence decrease with the increase of Gd₂O₃ concentration. The integrated light emission intensity of these glass samples excited by X-ray decreases from 143% of BGO to 19% of BGO and decay time reduces from 46.5 ns to 30.5 ns. The photoluminescence of the glasses is higher than that of BGO, while the radioluminescence is lower than that of BGO.