Since the excellent development and accomplishment of graphene fields by many researchers in recent years, the reinforcement of polymer-based nanocomposites by addition graphene which have a great potential in many applications. According to different size, shape and produce processing, there are various kinds of graphene have been discovered. In this study, we use the one kinds of graphene, which is call graphene nanosheets (GNS). We encapsulated numerous graphene nanosheets on the surface of polypropylene pellets and then manufactured graphene nanosheets/ polypropylene composite plates by hot press molding. We investigated the effect of surface characteristics of various additions of graphene nanosheets on graphene nanosheets/polypropylene composite plates. Result shows, the both of heat absorption and heat dissipation of the graphene nanosheets/polypropylene composite plates are improve significantly by addition of graphene nanosheets.