A rack for a dishwasher, the rack comprising: an outer edge rib forming a loading space for dishes to be washed; and a loading surface (300a, 300b) formed inside the outer edge rib for loading the dishes therein, wherein the loading surface (300a, 300b) is formed by: a plurality of lower ribs arranged to be extended in one direction of the outer edge rib; and upper ribs arranged to be extended in a direction crossing the lower ribs and formed at a position higher than the lower ribs, wherein the lower rib comprises: an upper inclined portion forming an upper portion of the lower rib, the upper inclined portion is provided with an inclined surface of which both sides are downwardly inclined; a lower curvature portion arranged below the upper inclined portion and provided with a curved surface of which both lower sides are curved toward a center, wherein the upper rib comprises: an upper curvature portion provided with a curved surface of which both sides are downwardly curved; a lower inclined portion provided with an inclined surface of which both lower sides are inclined toward a center. an outer edge rib forming a loading space for dishes to be washed; and a loading surface (300a, 300b) formed inside the outer edge rib for loading the dishes therein, wherein the loading surface (300a, 300b) is formed by: a plurality of lower ribs arranged to be extended in one direction of the outer edge rib; and upper ribs arranged to be extended in a direction crossing the lower ribs and formed at a position higher than the lower ribs, wherein the lower rib comprises: an upper inclined portion forming an upper portion of the lower rib, the upper inclined portion is provided with an inclined surface of which both sides are downwardly inclined; a lower curvature portion arranged below the upper inclined portion and provided with a curved surface of which both lower sides are curved toward a center, wherein the upper rib comprises: an upper curvature portion provided with a curved surface of which both sides are downwardly curved; a lower inclined portion provided with an inclined surface of which both lower sides are inclined toward a center. a plurality of lower ribs arranged to be extended in one direction of the outer edge rib; and upper ribs arranged to be extended in a direction crossing the lower ribs and formed at a position higher than the lower ribs, wherein the lower rib comprises: an upper inclined portion forming an upper portion of the lower rib, the upper inclined portion is provided with an inclined surface of which both sides are downwardly inclined; a lower curvature portion arranged below the upper inclined portion and provided with a curved surface of which both lower sides are curved toward a center, wherein the upper rib comprises: an upper curvature portion provided with a curved surface of which both sides are downwardly curved; a lower inclined portion provided with an inclined surface of which both lower sides are inclined toward a center. an upper inclined portion forming an upper portion of the lower rib, the upper inclined portion is provided with an inclined surface of which both sides are downwardly inclined; a lower curvature portion arranged below the upper inclined portion and provided with a curved surface of which both lower sides are curved toward a center, wherein the upper rib comprises: an upper curvature portion provided with a curved surface of which both sides are downwardly curved; a lower inclined portion provided with an inclined surface of which both lower sides are inclined toward a center. an upper curvature portion provided with a curved surface of which both sides are downwardly curved; a lower inclined portion provided with an inclined surface of which both lower sides are inclined toward a center.