This work reports the intense emission at $2.7\mathrm{\mu m}$ in a ${\mathrm{Er}}^{3+}/{\mathrm{Pr}}^{3+}$ -codoped fluorophosphate (FP) host glass. This FP glass shows good thermal stability and high transmittance around $3\mathrm{\mu m}$ . The emission characteristic and energy transfer upon excitation of a conventional $980\mathrm{nm}$ laser diode are investigated. The prepared glass possesses higher spontaneous transition probability ( $22.16{\mathrm{s}}^{-1}$ ) along with a larger calculated emission cross section $(6.57\pm 0.11)\times {10}^{-21}{\mathrm{cm}}^2$ corresponding to the laser transition ${{}^4\mathit{I}}_{11/2}\to {{}^4\mathit{I}}_{13/2}$ . In addition, the effect of ${\mathrm{Pr}}^{3+}$ codoping on the $2.7\mathrm{\mu m}$ photoluminescence in FP glass is demonstrated. Hence, the advantageous spectroscopic characteristics of ${\mathrm{Er}}^{3+}/{\mathrm{Pr}}^{3+}$ -codoped FP glass together with the outstanding thermal property indicate that this kind of glass may become an attractive host for developing solid-state lasers at around $2.7\mathrm{\mu m}$ .