The invention discloses a construction waste solid waste treatment device with a dustproof function, and belongs to the technical field of construction waste treatment device. The construction waste solid waste treatment device comprises an L-shaped plate, the L-shaped plate is fixedly connected to the upper surface of a bottom plate, a stirring mechanism is arranged on the L-shaped plate, one end of the stirring mechanism penetrates into a crushing barrel, a plurality of crushing teeth are evenly and fixedly connected to the inner wall of the crushing barrel, and a feeding port is formed in the upper surface of the crushing barrel. According to the construction waste solid waste treatment device with the dustproof function, by arranging the stirring mechanism, when a first motor works, a stirring plate can be driven to rotate through a first rotating shaft, the stirring plate can stir construction waste, crushed materials can fall into a collecting box through screen nets, the collecting box is internally provided with an interlayer, and the pore sizes of the multiple screen nets are different, so that the crushed materials with different sizes can be screened, the crushed materials with different volumes and sizes are screened, the motor is controlled to work to drive the collecting box to rotate, the positions of the multiple screen nets can be adjusted, and waste can be screened out easily in a classified mode.