The invention relates to a construction waste treatment system. The construction waste treatment system comprises a feeder, a brick and concrete separator, a first jaw crusher, a first impact crusher, a second impact crusher, a first vibrating screen, a second vibrating screen and a light substance removing device, wherein the feeder, the brick and concrete separator, the first jaw crusher, the first impact crusher, the first vibrating screen and the light substance removing device are successively connected; the brick and concrete separator, the second impact crusher and the second vibrating screen are successively connected, and the second impact crusher is arranged below the brick and concrete separator. The construction waste treatment system provided by the invention can separate construction waste into bricks, concrete and other impurities, and through follow-up treatment, a brick material and a concrete material which are relatively high in purity can be obtained.