The invention relates to a wall-mounted washing machine, comprising a barrel module fitted directly to a wall and a housing which covers the outside of the barrel module; the housing is fixedly connected with the barrel module. The housing is fixedly connected with the barrel module, so that processing of the wall is omitted, and the housing is less difficult to mount. The barrel module may vibrate during operating of the washing machine and basically has no movement relative to the housing, so that the housing can be mounted more stably. A limiting structure provided herein also helps limit the lateral shift of the housing, so that the housing is fitted more stably and has longer life. Compared with the prior art, the wall-mounted washing machine has the advantages that screws are omittedfrom the limiting structure so that production cost is reduced; mounting steps are fewer, so that the assembly efficiency is very high.