The invention discloses a combined hoisting support erected on a wall and a construction method of the combined hoisting support. The combined hoisting support structurally comprises a first frame body erected on the wall, a second frame body horizontally arranged on the first frame body in a sleeving manner and connecting pieces, wherein the first frame body comprises first transverse rods and first vertical rods fixedly arranged on the corresponding first transverse rods, and the first transverse rods are provided with multiple connecting holes; the second frame body comprises second transverse rods and second vertical rods fixedly arranged on the corresponding second transverse rods, the second transverse rods are provided with multiple connecting holes, the second transverse rods are horizontally arranged on the corresponding first transverse rods in a sleeving manner, and the ends, far away from the wall, of the second transverse rods are fixedly provided with hoisting fulcrum rods; and the connecting pieces penetrate the connecting holes so that the first frame body and the second frame body can be adjustably connected. The support has the beneficial effects that in construction of a compact building, little space is occupied, mounting and dismounting are easy, the width can be adjusted along with the size of the wall, and the support can be used repeatedly. The problem that in the prior art, as the construction space is limited and a tower crane and a truck-mounted crane cannot be used, hoisting construction is difficult is solved.