To provide a crushing device capable of certainly performing crushing of an object to be crushed requiring much crushing time while suppressing heat generation of the object to be crushed at crushing as much as possible.

In the crushing device comprising a stone mill 2 formed with a recession part 1 for storing the object to be crushed; and a rod body 3 constituted so as to be vertically movable in order to intrude from an upper end opening of the stone mill 2 to the inside and crush the stored object to be crushed, the shape of the recession part 1 is narrowed toward its upper end opening side.