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The fluorochloride glasses samples with good luminescent properties in the infrared region were successfully prepared by melt quenching method.The introduction of CI effectively improved the mid-infrared (MIR) luminescence of erbium-doped fluoride glass at 2.7 μm nearby.According to Judd-Ofelt theory,the increase in Ω2 after the introduction of CI indicates an increase in the asymmetry and covalence of the sample.X-ray diffraction (XRD),absorption spec trum,Raman spectroscopy,infrared Fourier (FTIR) and infrared fluorescence spectroscopy were specifically conducted.The emission cross section (1.04× 10-20 cm2) and the absorption cross section (9.68× 1021 cm2) of the sample at 2.7 μn nearby were calculated by measurement.Therefore,non-oxide erbium-doped fluorochloride glass is a good luminescent material in the MIR band.