Green nanoparticle producing using biological systems, particularly plant extracts, is a growing subject in nanotechnology. Synthetic concoctions and physical tactics have been in use for many years, the recognition of their hazardous effects on human well being and condition has affected significant global views for the scholars. Green synthesis is now in use very large scale. Present time green synthesis of nanoparticles with the help of plant extracts and their metabolites is held in large criteria. The main target of Green synthesis of nanoparticles is to minimize the waste and toxic harmful products. Green synthesis is an environmental friendly synthesis. In this study, silver nanoparticles were studied using ginger extract and one silver salt (silver nitrate) as a precursor. As well as, cobalt nanoparticles were studied using neem (azadirachtaindica) leaves extract and cobalt chloride as a precursor, we were also studied palladium nanoparticles using curry leaves extract. The synthesized nanoparticles were characterized by their melting points, ultraviolet-visible spectroscopy (UV-Vis) and infrared spectroscopy (IR)