For elucidation of the glass composition's influence on the spectroscopic properties in the chalcohalide system and the discovery of a new material for applications in mid-infrared fiber-lasers, a serial Pr3+-doped (100-x)(0.8GeS(2).0.2Ga(2)S(3))xCdI(2) (x = 5, 10, 15 and 20) chalcohalide glasses were prepared. similar to 4.6 mu m mid-infrared fluorescence emission from Pr3+ in the sulfide glass is successfully observed at room temperature excited by a 2.01 mu m Tm3+:YAG ceramic laser system, and the effective line-width of fluorescence band is 106-227 nm. Intense compositional dependence of mid-infrared emissions is found. The radiative rates of Pr3+ ions in these glasses were calculated by using the Judd-Ofelt theory. (C) 2014 Elsevier Ltd. All rights reserved.