This study explores a series of optical, physical and structural properties based on P2O5-Al2O3-ZnO (ZAP) with glass doped 1 mol% Tb2O3, which changed the composition ratio between ZnO and P2O5. The structure and optical of glasses were studies by Raman spectra and fluorescence spectra. The Raman spectra with the zinc content increases, the 650-810 cm-1 at the P-O-P bond has no shift, but the intensity of the absorption peak decreased. The fluorescence intensity increases with the ZnO content increases. The glass density and refractive index also increases with the ZnO content increases.