The utility model relates to a can be under adverse circumstances can self -protection wind -driven generator. This wind -driven generator is including stand, wind wheel mechanism and generator, its characterized in that: wind wheel mechanism has a plurality of rotor blade units to constitute, the rotor blade unit is including catching wind subassembly, wheel trichidium, drive assembly and motor,it rotationally installs on round trichidium through the pivot to catch the wind subassembly, the motor passes through drive assembly and is connected with the pivot transmission. This kind of wind -driven generator's the wind subassembly of catching can the rotation, can make the wind -catching surface of catching the wind subassembly avoid the wind direction when running into the bad weather tofurthest carries out self -protection to wind wheel mechanism.