Abstract: A portable basketball stand comprises an expandable box body; when the box body is expanded, one outer side of the box body being used as a backboard; the box body having a receiving space therein; the box body having at least one penetrating hole penetrating outer walls of the box body and a retaining ring within the box body; a basket having a locking device for locking to the box body; a supporting rod for supporting the box body; the supporting rod being inserted into the at least one penetrating hole and the retaining ring so as to be fixed to the box body; a seat with a plurality of supporting posts extended from the seat so as to form as a base for supporting the basketball stand; the seat having an inserting hole for receiving the supporting rod; and the supporting posts being foldable with respect to the seat.