The invention belongs to the field of mating manufacturing of mechanical parts, and particularly relates to a flexible lifting gear for assembling and disassembling. The flexible lifting gear for assembling and disassembling is characterized in that the flexible lifting gear for assembling and disassembling comprises an L-shaped lifting rod, a lifting hook, a lifting ring and lifting plates; the middle of the left lifting plate and the middle of the right lifting plate are hinged together through a hinge pin, and clamping plates are welded to the bottom end of the left lifting plate and the bottom end of the right lifting plate correspondingly; the lifting ring is arranged on an upper beam of the L-shaped lifting rod, the lifting hook is arranged on a lower beam of the L-shaped lifting rod, the lifting ring and the lifting hook are located on the same axis perpendicular to the upper beam and the lower beam of the L-shaped lifting rod 1, and when the L-shaped lifting rod is in the no-load state, the upper beam and the lower beam are located at horizontal positions; and connecting holes are formed in the top end of the left lifting plate and the top end of the right lifting plate correspondingly, a lifting rope is connected into the connecting holes, and a lifting loop is connected to the middle of the lifting rope. The flexible lifting gear for assembling and disassembling is simple in structure, reliable in clamping, capable of ensuring safety and convenient to operate; and the application range is wide, the number of lifting appliances is reduced, the weight of the liftingappliances is reduced, and the manufacturing cost is also reduced.