The invention discloses a pulley type hanger sliding beam connecting device. A hanger sliding beam is mounted at the bottom of a truss of a jacking platform through the pulley type hanger sliding beam connecting device. The pulley type hanger sliding beam connecting device comprises a connecting top plate connected with the bottom of the truss of the jacking platform, and a pulley assembly arranged below the connecting top plate. The pulley assembly comprises a pulley shaft mounted below the connecting top plate through a lug plate, and a pulley arranged on the pulley shaft. The hanger sliding beam is arranged on the sliding wheel in a sliding mode. The hanger sliding beam and the truss of the jacking platform are connected through the pulley type hanger sliding beam connecting device, a traditional hanging sliding beam and truss fixed connecting mode is replaced, sliding between the hanger sliding beam and the truss is achieved, the moving stroke of a hanger is complemented through sliding of the hanger sliding beam, and the problem that when the outer wall of a super highrise core barrel is large in contraction degree, the sliding distance of the hanger cannot meet the construction and safety requirements is solved.