The utility model discloses a multifunctional lifting shaft working platform system, which comprises a working platform fitted with the dimension of a shaft, pulley blocks preinstalled on two opposite side walls of the shaft, a plurality of guide pulleys, a steel wire rope and a winch, wherein the working platformcomprises a working table-board and an overturn-preventing device arranged at the periphery of the working table-board; two vertical rods are fixedly arranged symmetrically at positions close to two ends of the symmetry axis of the working table-board; the vertical rods correspond to the pulley blocks on the two side walls; a horizontal connecting rod is arranged between the vertical rods; the tops of the vertical rods are fixedlyprovidedwith deflecting pulleys; one end of the steel wire rope is fixed to one side wall of the shaft through the related pulley block, and the other end of the steel wire rope is connected with the winch through the two deflecting pulleys on the working table-board, the pulley block on the other opposite side wall of the shaft, shaft side wall reserved holes and the guide pulleys sequentially. The system is simple in structure and convenient to mount; and the whole working platform can move vertically in the shaft, the safety and reliability are high, the construction efficiency is improved, the cost is reduced, and the degree of mechanization of construction in the shaft is improved.