This washing machine (1) is provided with: a vertical shaft-type washing tank (5) that accommodates laundry and a washing liquid, and in which washing operations including a cleaning step are performed; and rollers (41, 71, 81) that rotate to facilitate movement of the laundry and which are rotatably provided on an inside wall part of the washing tank (5) while a rotating shaft thereof is aligned in the vertical direction. The washing machine is configured such that the level of the washing liquid inside the washing tank (5) can be set to a plurality of stages from a minimum water level to a maximum water level, and the rollers (41, 71, 81) are disposed such that the entire lengths thereof in the vertical direction extend over at least two levels among the plurality of set levels.
