To prevent super grains on an electrodepositioning super grain grinding wheel from falling and to prolong its life.

This electrodepositioning super grinding grain grinding wheel has large size super grinding grains 4 of 100 μm or more average diameter stuck on the surface of the grinding wheel base metal 1 in a single layer by means of metal plating 2 and small size super grinding grains 5 are stuck in a single layer on the metal plated surface in the gap between the large grain super grinding grains in a single layer, while the protruding ends of the large size super grinding grains 4 and the small size super grinding grains 5 are approximately in a line. The grinding grain rate of the large size super grinding grains 4 stuck on the grinding wheel base metal 1 is 40% to 80% and the average grain diameter of the small size super grinding grains 5 is preferable to be 20% to 50% of the average diameter of the large size super grinding grains 4.