The invention discloses a domestic energy-accumulating fine grinding machine, which comprises a power device, a rotary main cutter and a container, and further comprises an energy-accumulating fine grinding machine body, wherein the energy-accumulating fine grinding machine body comprises a disc-shaped base body and a strip-shaped tooth group which is formed by a plurality of strip-shaped teeth having triangular cross sections; the energy-accumulating fine grinding machine body is arranged at the upper side of the main cutter, and the strip-shaped tooth group is configured on the lower surfaceof the disc-shaped base body; the geometrical shapes of the strip-shaped teeth are defined by scanning triangular cross sections along a linear or curvilinear path of the lower surface of the disc-shaped base body; sides of vertex angles, which face downwards, of the triangular cross section comprise linear sections or curved sections; speed, which is nearly identical to a speed direction of themain cutter, of acquiring material particles, can be guided to be speed which is nearly opposite to the speed direction of the main cutter, negative energy which can weaken a cutting effect can be guided into positive energy which can enhance the cutting effect, or a part of material particles, which move away from a cutting area, can colloid with a fixed cutter edge in an opposite direction, so that cutting is conducted once again, and a part of energy, which does idle work, is converted into energy doing useful work; and therefore, beneficial effects of saving energy and improving efficiencyand quality can be achieved.