The invention discloses an odor inhibition type waste circuit board powder filled waste ABS (acrylonitrile-butadiene-styrene copolymer) recycled composite material and a preparation method. The recycled composite material comprises the following raw materials in parts by weight: 100 parts of waste ABS, 20-100 parts of waste printed circuit board powder, 1-2 parts of antioxidant and 1-5 parts of odor inhibitor. The preparation method is characterized by uniformly mixing the raw materials in proportion, controlling the processing temperature zone at 190-200 DEG C and controlling the screw revolution not to exceed 240r/min, carrying out melting on a twin-screw extruder and carrying out traction, cooling and granulation, thus preparing the odor inhibition type recycled composite material. The recycled composite material has excellent comprehensive properties, also solves the key problem of strong odorizing property affecting wide application of the recycled composite material, has the effect of changing the current situation that waste circuit board non-metallic materials are difficult to utilize efficiently, has economical efficiency and recyclability and has obvious economic, social and environmental benefits.