The invention discloses a washing machine comprising an outer barrel and an inner barrel disposed in the outer barrel. The inner barrel has a sealed lower half part separated from water in the outer wall, and an upper half part communicated with the water in the outer barrel; and the height of the sealed lower half part is greater than a maximum water level during the washing. Therefore, due to the separation of the sealed lower half part of the inner barrel and the water in the outer barrel, deficiencies of water and time waste, and poor heath performance of the washing machine are overcome.