▎ 摘　　要

NOVELTY - Preparing polymer and graphene composite material comprises (i) melting and mixing the graphite material and the high molecular polymer to obtain the blend; (ii) cooling and molding the blend to obtain the molding composite material; (iii) using the stretching device to stretch the molded composite material to obtain the deformed composite material; (iv) melting the deformed composite material, stirring, cooling and molding; and (v) repeating the step (iii) and step (iv) for N times, where N is ≮1. USE - The method is useful for preparing polymer and graphene composite material is useful in graphene energy storage, solar cell, catalyst carrier, and nano electronic device. ADVANTAGE - The method: is simple and easy to operate; and prepares polymer and graphene composite material with excellent heat conducting performance, conductivity and mechanical strength. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Polymer and graphene composite material, prepared as mentioned above; and Base resin comprises the polymer and graphene composite material.