Steel beam hoisting device capable of stabilizing

The utility model discloses a stable steel beam hoisting device which comprises two rectangular rods, cylindrical rods are fixed to the tops and the bottoms of the sides, close to each other, of the two rectangular rods, two movable plates are arranged between the two rectangular rods, and protruding blocks are fixed to the tops and the bottoms of the movable plates. U-shaped plates are fixed to the bottoms of the sides, close to each other, of the two moving plates, pressing plates are arranged on the sides, close to each other, of the two moving plates, and the two U-shaped plates are matched with the correspondingly-arranged pressing plates correspondingly to be used for restraining the two ends of a to-be-hung piece. The two moving plates can move on the cylindrical rod, steel beams of different lengths can be fixed, for some arc-shaped steel beams or steel beams of other shapes, due to the fact that the gravity centers of the moving plates are not located in the centers of the steel beams, the cylindrica