A wall-mounted washing machine case assembly (100) and a wall-mounted washing machine (1000) having same. The wall-mounted washing machine case assembly (100) comprises: a rear outer tub (10) comprising a back board (11) and an outer barrel (12) disposed at the front side of the back board (11); and a front casing (20) connected to the rear outer tub (10) and defining a chamber (101), the left sides and the right sides of the front casing (20) and the rear outer tub (10) being respectively provided with at least one limiting structure (4) in a left-right direction. The wall-mounted washing machine having the case assembly is easy and stable in assembly, and has a long service life.