The invention discloses an aerial work hanging device which comprises an 'L'-shaped support. A positioning screw is mounted on the side wall of the support in a penetrating manner, a positioning rubber mat is mounted at the tail end of the positioning screw, a sleeve is mounted at the tail end of a horizontal arm of the support, a set screw is arranged on the sleeve, a horizontal adjusting plate is arranged at the bottom of the support, one end of the horizontal adjusting plate is inserted into the support, the other end of the horizontal adjusting plate penetrates the sleeve, a safe enclosedrod penetrates the sleeve and the sleeve on the horizontal arm of the support, and a hanging ring is arranged on the safe enclosed rod. The aerial work hanging device is simple in structure, convenient to carry and use small in occupied area and provided with the detachable support and the horizontal adjusting plate, the device can adapt to steel channel frameworks with different width specifications, long-distance horizontal and vertical movement of the device can be achieved, and on-site actual requirements are met.