The invention provides a hoisting technology of turning over of a tower. The hoisting technology comprises the steps that the tower is prefabricated on a cup support; the tower is transported to a spraying workshop to be sprayed; 3, an auxiliary scaffold and a straight ladder are arranged on a deck of the top of the tower; 4, on a gantry crane, hoisting ropes are connected to a hoisting point anda supporting rod of the tower correspondingly; 5, an upper trolley hoisting hook and a lower trolley hoisting hook of the gantry crane are lifted up at the same time until the tower is at a vertical state; 6, the position of the tower is adjusted to be consistent with the direction and position after installation; 7, a head of the lower trolley hoisting hook is installed in place, and the tower isinstalled to the corresponding position of a module and fixed; and 8, after safety ropes are connected, buckles are disassembled. According to the hoisting technology, the problems of erection, angleadjustment and in-place installation of the tower are solved, and the overall prefabrication efficiency of the tower is improved greatly; moreover, the problems that the tower is divided and prefabricated, and tower accessories cannot be carried and hoisted completely are solved; and the structure completeness of the tower in the whole construction process is ensured, and the safety in the towerprefabrication process is improved.