PURPOSE: A motor rotor is provided to improve the man-hour and attachment defect by parallelly inserting a single magnet into the magnet insertion part. CONSTITUTION: A motor rotor(100) comprises a rotor core(110) and a plurality of magnets(120) consisting of a plurality of core planes(110a). A plurality of magnet insertion parts(111) is formed on the outer circumference of the rotor core. The magnet is inserted into the magnet insertion part in the axial direction, respectively.