The invention provides an angle-type wall-hanging (ceiling mounted) air conditioning indoor unit comprising a heat exchanger, a fan, an air duct assembly, a shell, and the like; the shell includes a front plate, a top plate, a bottom plate, wall-attaching plates, and the like; and air inlets and air outlets are formed in the shell. According to the shell, two vertical edges of the front plate areconnected with two wall-attaching plates, and the two wall-attaching plates are mutually perpendicular; the shell is arranged in a flat shape, a total width of the front plate is greater than a heightof the same, and the bottom plate is provided with air inlets and air outlets; the air inlets are disposed near the front plate; the air inlets are disposed close to a corner. According to the angle-type wall-hanging (ceiling mounted) air conditioning indoor unit, the horizontal diffusion width of cold air is effectively increased, the horizontal diffusion area of the cold air is expanded, thereby solving the problem of uniform distribution of the cold air; meanwhile, a good indoor air circulation system is established, an air conditioning indoor unit is installed at a reasonable height in the room, the cold air is gradually lowered under the promotion of the air circulation system, the indoor temperature is uniformly reduced, so that no obvious feeling of the cold air is obtained when people are in an air-conditioned room, and the room is neat and attractive.