Grinding apparatus according to an embodiment of the present invention, the pulverized food waste is put and a discharge, the grinding unit including a grinding element 2 which is located in a first crushing member and the lower to the upper position; The first and second rotation drive which rotates the at least one grinding element; And a lower portion located in the cutting portion supporting a ground food gathering discharged from the pulverizing unit. It said first grinding member is turned, but the food is positioned near the center of the first crushing member includes a slot which is positioned away from the center of the first crushing member. The first is a plurality of sections on the opposite side of the second grinding element defines opposed to the grinding element, concave shape to have a recess located above the plurality of concave portions rotation located in the section wherein the plurality of the plurality of sections respectively when rotated in a circle in a position corresponding to the slot.