The invention relates to a permanent magnet hoisting suction cup, which is particularly suitable for hoisting steel or waste steel materials in a goods yard or a material place and belongs to a load hanger or device technique for a crane in the technical field of transportation. The permanent magnet hoisting suction cup consists of a shell, a bottom plate and permanent magnets, wherein the plurality of permanent magnets are arranged on carriers and between the shell and the bottom plate; the number of the permanent magnets is even, and each nonmagnetic material isolator is arranged between the adjacent permanent magnets; the adjacent permanent magnets which have opposite polarity are vertically placed on a carrier plate; the carrier plate is made of a nonmagnetic material; a ferromagneticsliding plate is arranged between the carrier plate and the non-ferromagnetic bottom plate; a nonmagnetic isolating pad is arranged on the sliding plate corresponding to the permanent magnets arranged on the carrier plate; and an actuating mechanism which can make the sliding plate do reciprocating motion is arranged on the ferromagnetic shell.