To provide a metallic mold panel capable of being bent straight with accurate bending angle and facilitating machining.

Rib parts 2 bent and formed like a column and expansion and shrinkage parts 3 whose cross sections are formed into a wave shape along a plurality of bent bars parallel with the longitudinal direction of the rib parts 2 are alternately provided. A plurality of separator insertion holes 4 are formed by arranging them on a straight line parallel with the longitudinal direction of the rib parts 2 in the rib parts 2. The separator insertion hole 4 has a shape formed by combining a circular part in which a separator is inserted with a thin and long protruding part protruding in the direction of straight line from the circular part.