A foot of a washing machine comprises a foot base, a flexible accommodating body and an adjustable foot, a hollow chamber is arranged in the foot base, and the hollow chamber comprises at least a gas chamber for filling gas. The flexible accommodating body is arranged in the hollow chamber and is communicated with the gas chamber, an accommodating chamber is arranged in the flexible accommodating body and is provided with a hydraulic medium. The hydraulic medium can flow to the gas chamber under pressure. An end of the adjustable foot is relatively slidably set in the hollow chamber and the flexible accommodating body is in contact or connected with the adjustable foot. The foot of a washing machine can automatically adjust adaptively due to the fluidity of the hydraulic medium under different pressures.