Construction waste recycling and sorting device capable of achieving reduction treatment and sorting method

The invention discloses a construction waste recycling and sorting device capable of achieving decrement treatment and a sorting method, and belongs to the technical field of waste recycling. The sorting device mainly comprises the vertical frame, the extrusion cabin, the vertical compression assembly and the transverse compression assembly, the vertical compression assembly and the transverse compression assembly are mounted on the vertical frame, and metal materials fed into the extrusion cabin can be compressed in the two directions of the vertical compression assembly and the transverse compression assembly through the device, so that the metal materials deform; and after the metal materials are compressed, an electromagnet can be installed at the bottom of the compression end in a matched mode, the metal materials can be rapidly taken out through the magnetic attraction force of the electromagnet, the metal materials in the construction waste can be more thoroughly sorted out, and therefore the construct