A surface discharge type air cleaning device comprises an insulating dielectric body formed in the shape of a sheet, and a discharge electrode and a ground electrode formed at one surface of the insulating dielectric body, the discharge electrode and the ground electrode being disposed in parallel with each other while the discharge electrode and the ground electrode are spaced a predetermined distance from each other. The discharge electrode has a plurality of pointed ends protruding toward the ground electrode. Consequently, electrical charge accumulation is prevented and continuous discharge is possible, even when a DC power source is used. In addition, entirely uniform and stable discharge at the surface of the dielectric body is accomplished, and therefore, the generated number of hydroxyl radicals and negative ions is increased while the generated amount of ozone is decreased. Also, discharge safety is increased, and therefore, air cleaning efficiency is improved.