A wall-mounted ultrasonic washing device, comprising: a body (100) which is mounted on a wall, an ultrasonic generating device (200) which is provided with an ultrasonic vibration end that generates ultrasonic vibrations, and a washing tank (400) which is used for holding a washing liquid, the washing tank (400) being detachably disposed on the body (100), and the ultrasonic vibration end facing the washing tank (400). The wall-mounted ultrasonic washing device is easy to install and takes up little space. The ultrasonic vibration end is in direct contact with soaked clothes to be washed (5), which may greatly reduce the consumption of ultrasonic waves, thus improving stain-removing efficiency. In addition, the washing tank (400) is detachably disposed on the body (100), making removing and replacing a washing liquid at any time easy, and making washing easy, while large amounts of water may be saved, and the cleaning process is convenient and quick.
