To establish a Altari radish pre-processing system far kimchi, the leaves and root tail of the Altari radish cutting de-vices were developed. The cutting resistances depend on the edge angles, oblique angles and cutting speeds were measured and analyzed. The experiments were performed to reveal the optimal conditions that showed the minimum cutting resistances acting on the materials. As the results, the optimum conditions that acting on the leaves were at edge angle $25^{circ}$, oblique angle $40^{circ}$ and cutting speed 0.5 m/s, and those acting on the root tails were at edge angle $20^{circ}$, oblique angle $30^{circ}$ and cutting speed 0.5 m/s, respectively. Considered a safety conception, the oblique angle of the leaves cutting device was adjusted as $20^{circ}$, and then the cutting efficiencies of the both devices at these conditions were showed perfect performances.