The utility model discloses a sling. The sling comprises an installing base, a stand column vertically fixed to the installing base, a lazy arm horizontally arranged at the upper end of the stand column, a motor installed on the lazy arm, a coiling block, a lifting rope wound on the coiling block, and a hook connected with the free end of the lifting rope, and the coiling block is installed on an output shaft of the motor and coaxially rotates along with the output shaft. The motor drives the coiling block to rotate to enable the lifting rope to drive the hook to move up and down. According to the sling, the motor drives the coiling block to lift an on-load tap changer or a mutual inductor hung on the hook. The sling is only provided with several supporting components and transmission components, and therefore the sling is simple in structure, small in size and flexible in operation.