The invention discloses a washing machine. The washing machine comprises an outer cylinder, an inner cylinder, multiple water passing flow channel plates, an impeller disc and floating plates, wherein the inner cylinder is arranged in the outer cylinder and is arranged to be spaced from the outer cylinder, the multiple water passing flow channel plates are arranged in the peripheral direction of the inner cylinder at intervals, each multiple water passing flow channel plate and the side wall of the inner cylinder define a water passing flow channel, each multiple water passing flow channel plate is provided with multiple water spraying ports formed in the length direction of the plate at intervals, the impeller disc is rotatably arranged at the bottom of the inner cylinder, a water insulation cavity communicated with the water passing flow channels is defined between the impeller disc and the inner cylinder, water draining ribs are arranged on the side, facing the water insulation cavity, of the impeller disc, and one movable floating plate is arranged on each water passing flow channel plate and used for opening at least one water spraying port formed in the water passing flow channel plate according to the water level of the inner cylinder and closing other water spraying ports in the corresponding water passing flow channel plate. By the adoption of the washing machine, the strength of waterfall spraying waterflows and the water spraying amount are improved, the washing ratio of the washing machine is improved, and water consumption for washing is reduced.