The invention discloses a washing machine. The washing machine comprises a box, an outer barrel, an inner barrel, a water return cavity and a water return device; the outer barrel is arranged in the box, a clothes taking and putting opening is formed in the inner barrel, the inner barrel is rotationally arranged in the outer barrel, water-free space is formed between the inner barrel and the outer barrel in a defined mode, the water return cavity is formed outside the inner barrel and communicated with the inner barrel, and the water return device is communicated with the water return cavity and the clothes taking and putting opening so that water in the water return cavity can be conveyed back to the inner barrel through the clothes taking and putting opening. According to the embodiment, the washing machine has the advantages of not causing secondary pollution easily and saving water and being environmentally friendly and good in washing effect.