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The homogeneous glass sample for the (1-x)As2S3-xCdBr2,where x=0.015,0.035,0.05, was prepared by the conventional melt-quenched method.Amorphous (1-x)As2S3-xCdBr2 alloys were determined by X-ray diffraction, thermal comprehensive analysis and Raman scattering. The glass transition temperature (Tg) decreases a bit with the addition of CdBr2. Based on the experimental data, the microstructure is considered to be the discrete molecule species of AsBr3 and Cd-S atomic bonds or clusters are homogeneously dispersed in a disordered polymer network formed by AsS3 pyramids interlinked by sulfur bridges.