Building waste classification system

The utility model relates to the technical field of construction waste classification, and discloses a construction waste classification system which comprises a machine base, a box body is arranged on the upper portion of the machine base, a feeding bin is arranged on one side of the top end of the box body, a vibrating screen is arranged in the box body below the feeding bin, and a plurality of screen bars are arranged on one side of the vibrating screen in parallel. A plastic bag separating mechanism is arranged on the grate bars, a material guide plate is arranged below the grate bars, and an electromagnetic part is arranged on the material guide plate. According to the plastic bag separating mechanism, large plastic bags in waste can be removed, classified materials with different particle sizes respectively fall onto the material guide plate from different positions of the grate bars, finally, the large-particle-size materials and the small-particle-size materials are classified from the positions where