The invention provides a lifting appliance comprising a main framework and a plurality of connection pieces arranged along a pair of opposite side edges of the main framework. The fixed portions, usedfor being connected with the connection pieces, of the main framework are connection points. Each connection point comprises at least two flexible support legs with the connection point as the movement center. The end, far away from the main framework, of each flexible support leg is provided with a first connector. Through the main framework and the connection pieces, the lifting appliance is reasonable in structure and stable in connection, and stable lifting of construction components at preset intervals can be achieved.