Copper nanocomposite has been synthesized by simple chemical precipitation method. Firstly, the polymer metal complex was synthesized which was followed by the application of calcination technique. The synthesized polymer metal complex was analyzed by (IR) infra-red spectroscopy and nuclear magnetic resonance (NMR). Thereafter chemical composition and crystallographic structure of nanocomposite was confirmed by XRD measurement, which reveals that crystal system and size of nanoparticles is 19.34. While the scanning electron microscopic (SEM) images were taken for finer details of surface morphology of nanocomposite. These synthesized nanocomposites were also studied for antimicrobial activity.