A washing machine which includes a tub, a drum rotatably inside the tub, a pulsator rotatable inside the drum at a bottom of the drum, and an agitator to be connected to an upper portion of the pulsator, where the agitator includes an agitator body, a rinse case to be installed in the agitator body, and to accommodate a rinse, the rinse case being detachable from the agitator body, and a plate spaced from the rinse case along a downward direction of the rinse case, and located lower than a maximum water level of water to be supplied to the tub.