Abstract: A wall-hanging dehumidifier includes a shell in the form of a cabinet, air inlets (1) and air outlets (8) on the shell, and a fan system and a refrigeration system in the shell. The shell comprises a front panel and a rear panel (2). The dehumidifier comprises a wall-hanging assembly. The wall-hanging assembly comprises a hanging board (3) which is fixed on the rear panel (2), and a mounting board (10) which is fixed on the wall (200). The hanging board (3) has hanging holes (31) and the mounting board (10) has hooks (102). The dehumidifier can be mounted on the wall (200) by locking the hooks (102) on the mounting board (10) into the hanging holes (31) on the hanging board (3).