PURPOSE: To provide an automatic laundry agent machine capable of changing a box to be used preferentially in conformity with a user class.

CONSTITUTION: In the automatic laundry agent machine A provided with plural laundry storing boxes 15, a first storage means to store whether laundry is stored in the box 15 or not, a second storage means to store the priority order of the box 15, an input means to input the priority order, and a box display means 5 to show a vacant box to be used and so on are provided, and at the time of depositing the laundry, a control part shows the vacant box of the highest priority order by the box display means 5. For this purpose, it is checked successively whether the box is being used or not starting from the box of the priority order N=1, for instance, and it is enough to show the vacant box found out first.