The invention provides a hoisting auxiliary structure for a wind powered generator, which comprises a holding part and two hanging parts, wherein the hanging parts are positioned at two sides of the holding parts respectively and are connected and fixed with the holding part through diagonal bars. The upper end of each hanging part is provided with a lifting lug for a hanging rope to be inserted into. One side, adjacent to the side connected and fixed with the hanging parts, of the holding part is provided with a hydraulic locking device for controlling the opening and closing of the holding part at the side. The other side, adjacent to the side connected and fixed with the hanging parts, of the holding part is provided with a rotation mechanism for rotating the side and a hydraulic shortening mechanism. In hoisting process of the whole wind powered generator, the hoisting auxiliary structure opens the hanging ropes to protect the hanging ropes from contacting and colliding with the wind powdered generator and can maintain the stability of upright posts of the wind powered generator and improve construction quality.