Provided is an apparatus for firing a cathode material of a secondary battery which fires a cathode material for a secondary battery by moving the cathode material in a horizontal direction, including: a firing furnace including an air supply part which is placed in a lower portion and to which gas is supplied, an exhaust part which is placed in an upper portion and from which the gas is exhausted, and a firing space which is placed between the air supply part and the exhaust part and extended in a vertical direction intersecting the horizontal direction; a heater which heats the firing space of the firing furnace; a plurality of saggers which store the cathode material for a secondary battery and are stacked in the vertical direction in the firing space; and a pusher which has the plurality of saggers settled therein and moves the plurality of saggers in the horizontal direction.