The invention discloses a rice huller and a rice husking machine. The rice husking machine comprises the rice huller, a second-grade rice milling device, a third-grade rice milling device and a motor. Compared with a traditional rice milling device, the rice husking machine has the following advantages: (1) the rice huller is operated by a centrifugal parabola principle after improvement to achieve the advantages of small size, low noise and compact structure; (2) multi-row combined rice milling is adopted, and a multi-grade light milling mode is adopted to protect nutritional ingredients of rice grains; and (3) a traditional rice mill is totally driven to operate by one motor to directly cause heavy load of the motor; after improvement, conversion belt wheels are used for driving; one of the rice mill and the rice huller is only driven to rotate during rotating in one direction; for example, when the conversion belt wheels rotate clockwise, the rice mill is driven to rotate, and the rice huller is stopped working; when the conversion belt wheels rotate anticlockwise, the rice huller is driven to rotate, and the rice mill is stopped working; and another advantage is simple assembly and energy conservation.