Fullerenes, first reported by Kroto, are the carbon materials which only carbons connect 60 or more. Since such greatly unique materials were discovered, researches of fullerenes have been addressed a lot. In this report, we had prepared the composites which added the fullerenes to thermoplastic polyurethanes and styrene block copolymers, and then investigated the relationship between structures and properties of composites by measuring tensile properties, dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC) and atomic force microscopy (AFM).