Using physical and chemical dehydration technique and traditional melting and quenching method, we fabricated a group of Er/Pr-codoped water-free fluorotellurite glasses with composition of 60TeO 2 –30ZnF 2 –10NaF (TZNF60, mol%). The lifetime τ f of 4 I 11/2 → 4 I 13/2 transition, directly measured under the excitation by an optical parametric oscillator (OPO) laser system at 978nm, in Er/Pr codoped fluorotellurite glasses is 1.37–1.55ms, longer than that of Er-doped tellurite oxide (215μs) and Er-doped fluorotellurite glasses (1.07ms). The introduction of Pr 3+ ions into Er-doped system increases the emission intensity at 2.71μm (Er: 4 I 11/2 → 4 I 13/2 ) and emission cross section as well. These advances partially arise from the absence of OH groups and low phonon energy with the addition of large amount of fluorides into oxide-based host glasses. With the high quantum efficiency and large figure of merit, Er/Pr-TZNF60 glass can be potentially a promising material for the development of mid-infrared fiber lasers at around 2.7μm.