The 65TeO₂-15ZnO-10Na₂O-10WO₃ series tellurite doped with 0.2 mol% Er₂O₃,1 mol% Yb₂O₃,0.1 mol% Tm₂O₃,and x mol% Pr₆O₁₁ (x=0.25,0.3,0.35 and 0.4) are prepared by melt quenching technology.The glass sample is characterized by X-ray diffraction (XRD) and differential scanning calorimetry (DSC) curve to characterize the crystallization resistance and thermal stabil ity.The results show that the glass sample has good crystallization resistance,the difference betwee n crystallization temperature and transition temperature is 140 ℃,and has good thermal stability .The absorption spectrum results show that the Er³⁺/Yb³⁺/Tm³⁺/Pr³⁺ cod oped tellurite glass has a strong absorption peak at 980 nm,so the glass sample can be excited by a 980 nm pump source.In t he near-infrared range of 1 200—2 000 nm,the glass sample ha s three emission peaks of 1.35 μm,1.53 μm and 1.8 μm, and the full width at half maxima (FWHM) of the three emission peaks is greater than 10 0 nm,which covers the four wavebands of E,S,C and C+L for optical signal transmission,and greatly i ncreased the amplification bandwidth of erbium doped fiber amplifier (EDFA).