An aero wind power generation device may include a drone unit including drone wings configured to make the aero wind power generation device move and hover and a sensor unit configured to detect information for controlling the aero wind power generation device; a buoyancy generation unit including a side cover configured to open or close, a balloon disposed inside the side cover and configured to receive gas therein or release the gas therefrom, and a wire configured to surround the balloon; and a power generation unit including a rotating unit with a plurality of blades, a blade control unit of adjusting a state of the blades, and a motor unit of converting kinetic energy transferred from the rotating unit into electrical energy.