Construction waste transportation system attached to building body

The invention discloses a construction waste transportation system attached to a building body, and relates to the technical field of construction waste transportation equipment. The construction waste transportation system attached to the building body comprises a construction wall body and a waste passage; a plurality of feeding ports are formed between the waste passage and the construction wall body; sealing plates are fixedly mounted on the two sides of the waste passage; buffering plates are symmetrically arranged on the two sides of the waste passage; the buffering plates are fixedly connected with rubber plates; damping pieces are arranged between the buffering plates and the sealing plates; a slag outlet is formed in the garbage passage and the bottom of the building wall; and a water tank is arranged on the side wall of the building wall. When the rubber plates and the buffering plates on the left and right sides are subject to an outside acting force, the buffering plate pushes limiting seats to mo