The invention relates to an overland type mounting construction method for an extra-large wind generating set, and the overland type mounting construction method is applied to a lifting process of the wind generating set. The overland type mounting construction method for the extra-large wind generating set is characterized in that an erecting lifting rope of a fan tower tube is used for lifting. The fan tower tube comprises a tower tube and a flange plate with a threaded hole in side surface; at least four connecting fixing devices are uniformly and symmetrically arranged on the flange plate; and each connecting fixing device is composed of a fixed plate connected to the flange plate and a lifting ring connected to a steel wire. The overland type mounting construction method has the beneficial effects that: during lifting, a steel wire rope gets across pulleys on a crane; and when the crane is lifted, one section of the tower tube gradually moves upwards, and therefore, the lifting ring correspondingly changes according to angles between a rotary connecting device and the fixed plates.