Er³⁺/Ce³⁺co-doped tellurite-based glasses with composition of TeO₂-ZnO-Na₂O are prepared by high- temperature melt-quenching technique. Effects of Ce₂O₃content on the 1.53 μm band fluorescence spectra and fluorescence lifetime of Er³⁺are measured and investigated. It is found that the tellurite glass containing Ce₂O₃with molar concentration of 0.25% exhibits an increment of 13% in 1.53 μm fluorescence intensity and an increment of 15% in the ⁴I_13/2 level lifetime. The results indicate that the prepared tellurite-based glass with a suitable Er³⁺/Ce³⁺codoping concentration is an excellent gain medium applied for broadband Er³⁺-doped fiber amplifier (EDFA) pumped with a 980 nm laser diode.