The use of high strength aromatic copolyester thermotropic liquid crystal polymers in fibrous composite structures with polyimide adhesives as binding materials can eliminate directional mechanical property differences of liquid crystal polymers with controlling of each fibrous layer alignment in different directions, while retaining many of the original mechanical strengths. With this approach, a two-dimensionally isotropic liquid crystal polymer composite material can be obtained from the highly anisotropic liquid crystal polymer fiber. Kinetics of imidization of the polyamic acid (benzophenone tetracarboxylic dianhydride and 3,3''-methylene dianiline) for bonding LCP fibers have been evaluated at 225℃ , 275℃ and 325℃. Sound velocity measurement and tensile testing of composites show that higher polymide content provides higher modulus materials. Morphology study of LCP fiber and polyimide composited using scanning electron micrograph reveals poor interfacial adhesion between them.