Now days, the study of CdS nanoparticles is very important because of its dependent properties like electric, catalytic and optical properties. CdS nanoparticles in nature has II-VI group semiconductor with a wide band gap. In this manuscript, author used green synthetic method for the CdS nanoparticle production which is simple, convenient, economic and environmental benign using glucose/starch as capping agent. Synthesised CdS nanoparticles were characterized by using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Spectroscopy (TEM), Fourier Transform Infra-Red (FTIR) and UV-Visible Spectroscopy.