Washing machine

The invention discloses a washing machine. The washing machine comprises a box body; the barrel assembly is arranged in the box body and provided with a clothes putting opening, and a water drainage opening is formed in the bottom of the barrel assembly; the drainage assembly is communicated with the drainage port; the drainage assembly comprises a sewage drainage pipe and a purified water conveying pipe; an inlet of the sewage drainage pipe is communicated with the drainage port, and an outlet of the sewage drainage pipe is arranged outside the box body; a power unit for generating water flow power is arranged on the purified water conveying pipe, the purified water conveying pipe comprises a main pipe, an inner water conveying pipe and an outer water conveying pipe, an inlet of the main pipe is communicated with the water outlet, and an outlet of the main pipe is alternatively communicated with an inlet of the inner water conveying pipe and an inlet of the outer water conveying pipe through a switching unit