The Nano technology has become the back bone of the science department. Nanoparticles due to its size and reactivity contributes much in the research field. When added to plastics, coatings, and textiles, copper Nano particles play a critical role because of their anti-biotic, anti-microbial, and anti-fungal properties. The research work focus on the cost effective synthesis of copper Nano particle in an eco-friendly technique using papaya leaves. The Nanoparticles were prepared using copper chloride, and then the sample was sent for UV, IR characterization followed by the SEM and TEM characterization to study the nature of the copper nanoparticles.