A wall mounting apparatus, which includes a base provided with a plurality of positioning holes; a plurality of wall mounting pieces, each wall mounting piece being detachably connected to one of the plurality of positioning holes. One or more wall racks, each including at least two through holes, and configured to be hanged on the base by way of a corresponding connection of the through hole with the wall mounting piece. Each of the wall racks further includes members for securing the display. Moreover, a display device including such wall mounting apparatus is disclosed.