The invention relates to the field of wind power generation equipment, in particular to an adaptive wind power generation device which comprises a base, a column, a slanting rod, a power generation mechanism and a switch and further comprises a driving unit, a telescopic unit, a fixing ring, a first air bag, a check block and a controller. On one hand, the blade angle is adjusted through cooperation between a two-way screw and a double-headed cylinder to increase the contact area between blades and wind and further improve the power generation efficiency of the wind power generation device; onthe other hand, the telescopic unit is mounted on a stator and is vertically disposed to prevent desert dust from adhering to the wind power generation device, reduce accumulation of the desert dustand reduce the weight of the wind power generation device, so that the practicability of the wind power generation device is improved.