Polymer based textile composite materials have various application potentials from their superior mechanical but lightweight properties, and formability to various shapes by liquid molding processes. The superior properties are mainly caused by the reinforcing effect of fiber preform along its aligning direction. On the other hands, mechanical properties along the thickness direction are not sufficiently strong, which is probably caused by weak interfacial bonding between polymer matrix and fiber surface. As a point of manufacturing process, fast production speed and low cost for fabricating the composite components are very crucial factors to succeed in mass production of the composites. They can be realized by development of fast liquid composite molding process to fabricate the components with various complex geometries. In this study, carbon nanomaterials such as graphene oxide were embedded on the surface of carbon fabric by electrophoretic deposition method in order to improve the shape stability of fiber preform and interfacing bonding between polymer and the reinforcing fiber. Effects of the hybrid fiber preform were investigated in two respects. One is to increase the binding energy between fiber tows, and the other is to increase the interfacial bonding between polymer matrix and fiber surface. The effects were analyzed by measuring the binding force between fiber tows and interlaminar shear strength (ILSS) of the composite. Only a very small amount of graphene oxide enhanced the binding force by 105% and the ILSS by 14%. The processability of liquid composite molding was also investigated by measuring the process parameters of the composite materials composed of polymer matrix and the hybrid carbon fiber preform. Permeability of the hybrid preform was almost the same to that of untreated carbon fiber prefrom, which means that the production speed and quality of the composite products are not inhibited by the embedded nanomaterials.