The invention relates to a processing technology of a fabric reinforced thermoplastic composite plate. The technology comprises the following steps: 1, heating: uniformly scattering thermoplastic resin powder on the surface of a fiber fabric through a powder scattering machine, and heating the fiber fabric with the surface having the thermoplastic resin powder; 2, compounding: rolling the high temperature molten thermoplastic resin powder through a roller to compound the thermoplastic resin powder on the surface of the fiber fabric and impregnate the thermoplastic resin powder in the fiber fabric in order to form a fabric reinforcement layer; and 3, carrying out cooling forming: carrying out cooling forming on the fiber fabric obtained in step 2 to produce the fabric reinforced thermoplastic composite plate. The technology has the advantages of mass production, low production cost, good mechanical properties, and improvement of the tensile bending ability and the shear performance of the plate.