A washing machine (1) and a rotating tub (200) thereof. The washing machine (1) comprises: a box body (100); a rotating tub (200) rotatably provided in the box body (100) and comprising a tub body (210) and an outer drainage pipe (220), the outer drainage pipe (220) being provided outside the periphery of the tub body (210), a drainage channel (221) being defined in the outer drainage pipe (220), and liquid thrown out of the tub body (210) being guided to the drainage channel (221) by means of the outer drainage pipe (220); and an impeller (300) rotatably provided in the tub body (210).
