To provide a soap box, the width of which is reduced to make it placeable on a small washstand and easy to use, that facilitates the drying of a soap, and the side wall of which can be decorated with a pattern.

The space between the side walls (1) and (2) of the soap box (A) is reduced through side walls (3) and (4) because a soap (C) is put into, erected sideways, a soap receiving bottom (6) of the soap box is made semicircular, and two chevron grooves are provided to reduce the part of the soap that contacts the soap box (A), and a plurality of vents (8) to facilitate drying are provided.