The utility model discloses a fragment of brick and concrete piece separator, the ascending direction of slope that the rotary drum is is fixed on the slope frame, it includes barrel, pan feeding mouth, bead to change the tube formwork piece, the barrel bottom is provided with the pan feeding mouth, the barrel inner wall is provided with a plurality of beads, the bead is heliciform distribution structure at the barrel inner wall, pan feeding mouth one side is provided with the pan feeding transmission band, expect carefully that sieve mesh, well material sieve mesh and coarse fodder sieve mesh are located hypomere, middle section and the upper segment of barrel in proper order. Under of the transporting of this application through their heliciform beads on the rotary drum inner wall, the high difference of climbing, because the mesh aperture of upper segment, middle section and the hypomere of barrel is different, the piece is sifted out in the sieve mesh of rotary drum hypomere again, and the fragment of brick is sifted out in the middle section, and the concrete piece is sifted out at the upper segment, and the design is simple, separate effectually, can effectively separate big or small fragment of brick and the concrete of different granules.