Garbage crushing treatment device for building construction

The invention belongs to the technical field of building construction waste treatment, and discloses a building construction waste crushing treatment device which comprises a support and a crushing box, a placing plate is installed on the front face of the crushing box, two crushing rollers are rotatably installed on the inner wall of the crushing box, and crushing blocks and cams are fixedly installed on the outer surfaces of the crushing rollers; a supporting plate is supported on the top of the cam, and a movable frame is fixedly connected to the top of the supporting plate. The supporting plate continuously compresses the second spring in the upward moving process, so that the downward moving speed of the supporting plate is multiplied under the action of gravity and resilience force of the second spring in the downward moving process, vibration is generated, materials entering the device along the feeding port make contact with the flow guide cylinder, the flow guide cylinder is driven to rotate, the mat