To provide an air cleaning humidifier and a disk assembly thereof easily assembling the disk assembly by stacking.

The air cleaning humidifier includes a body, a tank provided inside the body, an air fan forming an air current inside the body, and the disk assembly having a plurality of stacked disks with one portion disposed in the tank. At least two of the stacked disks include a body, a plurality of assembly parts defined through a surface of the body, first protrusion parts protruding from one surface of the body, and second protrusion parts protruding from another surface of the body. The body is divided into a plurality of sectors by the plurality of assembly parts, and the first protrusion parts and second protrusion parts are alternately formed in each region into which the plurality of sectors is divided.