In this study, CdS nanophotocatalyst was prepared by low temperature solvothermal method for photodegradation of Rose Bengal (RB) dye in aqueous solutions in the presence of visible light photon. Further, synthesized CdS nanoparticles were characterized by various techniques such as Fourier Transform Infra-Red (FT-IR) Spectroscopy, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and UV-Vis spectroscopy. The obtained CdSNPsshown hexagonal wurtzite structure with decent crystallinity, good optical features and exhibited admirable photocatalytic efficiency (98.50%) towards the photodegradation of Rose Bengal (RB) dye.Kinetic parameters for the degradation of RBwith the prepared CdS nanoparticleswere also reported and data well fitted to thepseudo-first-order kinetic model.The stability of CdS photocatalyst was remained constant and efficiency not decreased much more over the use of fivecycles.