The utility model discloses a float formula fodder crushing apparatus, the gear pair playing fodder to its power of carrying out kibbling hammer leaf and acceptable transmission shaft be used for drive pivot rotation is used for including casing, transmission shaft, rotatable pivot of supporting in the casing, on being fixed in the pivot hitting, the pivot has a plurality ofly respectively around transmission shaft circumference, the gear pair includes transmission?coordination in the gear wheel of transmission shaft, transmission?coordination in the pivot and with large?gear's pinion, the utility model discloses the drive hammer leaf rotates around drive shaft axis behind the distance -increasing to utilize speed reducing gear pair to slow down to high speed?motor's power to the drive power of greatly increased hammer leaf, its crushing effect is better.