To provide the principle of an azimuth angle adaptable to save energy and create energy, resolving the defects that the energy saving functions of nature or living matters are not clarified yet in a rotation increasing/decreasing rate.

The efficiency of rotating a windmill having an azimuth of 45°, a wheel having an azimuth of 45° and an existing gear is about 1.3456 times to save energy. The efficiency of rotating a gear 1 having an azimuth of 45° is about 2.728 times to save energy. When the gear and the windmill mounted on a central positive rotation shaft 4 are rotated to the right, a gear and a windmill mounted on five surrounding reverse rotation shafts are rotated to the left. Thus, fan wind power is generated whose output is five times in usage to save energy. The principle of the azimuth angle is adaptable to save energy and create energy.