The invention provides a centripetal even-distance propelling device for a circular-arc-distribution huller blade group of a germ-remained rice husking machine and belongs to the technical field of propelling devices of the huller blade group. The two sides of a frame body of the centripetal even-distance propelling device are provided with circular arc plates, and gear shafts penetrate the part between the circular arc plates on the two sides. An intermediate gear shaft is arranged on the circular arc plate on one side between every two adjacent gear shafts, intermediate gears are arranged on the intermediate gear shafts, gears are arranged on the gear shafts on the same sides of the intermediate gears, and the gears are engaged with the intermediate gears. A support is fixed to the side, provided with the intermediate gears, of the circular arc plate. A worm is arranged on the support, the upper end of the worm is connected with an operating crank, a worm wheel is arranged at the shaft end of one intermediate gear shaft near the worm, the worm wheel is engaged with the worm, and a cam is fixedly arranged on the gear shafts and makes contact with a huller blade frame arranged on a sliding tool apron. One end of the tension spring is connected with the circular arc plate, and the other end of the tension spring is connected with the sliding tool apron.