Green composites are materials having eco-friendly attributes that are technically and economically feasible while minimizing the generation of pollution. This project refers to extract nano fibers from degradable sources mostly cellulosic to develop green composite materials. Cellulosic fibers in micro and nano scale are attractive to replace man-made fibers as reinforcement to make environmentally friendly green products. In this study, we will discuss the steps of extraction of cellulose nano fiber and their properties.