To improve the luminescence efficiency of up-conversion glasses in the blue and green wavebands in hope of realizing short wavelenth laser, through the fusion method, the sample based on 45PbF2+45GeO2+10WO3 host glass co-doped with Yb3+/Er3+ rare-earth ions was prepared. During the preparation,glass annealing temperature is 380℃ and maintaining constant-temperature lasts over 4 hours. By using the V-prism, it is found that the refractive index of host glass and the sample are 1.517 and 1.65, respectively. The transmittance is measured by using the ultraviolet-visible-infrared spectrometer in the wavelength range from 0.35 μm to 2.5 μm. The transmittance of the host glass is beyond 73%. That of the sample co-doped with Yb3+/Er3+ rare-earth ions is beyond 50% and there are characteristic absorption peaks of rare-earth ions. The emission spectrum was measured by using Japanese Hitachi F-4500 fluorescent photometer whose pump light is 980 nm semiconductor laser. There are a strong emission peak at 545 nm and a weak peak at 650 nm.