In order to obtain a low cost washing clothes case capable of washing a delicate clothes stored therein without damage and with sufficiently removing dirt from the clothes, the washing clothes case is for storing laundry therein on washing by a clothes washing machine. The washing clothes case comprises a container made of hard plastics and having at least one opening portion capable of opening and closing, a floating member attached on one of an outer surface and an inner surface of the container, and a plurality of water holes formed on a region of the container at which the floating member is not attached.