Abstract: A frame material that can be easily formed as a pillar or beam by appropriately adjusting the length and/or strength thereof, a joint portion of which is uniform and smooth, a residual portion of which can be used as a joint, and which can easily be combined with other building materials. The frame material is formed into an elongate shape, and a cross section crossing at right angles a longitudinal axis thereof is formed into a rectangular shape with the length of a shorter side of the rectangular cross section being made one-third of the length of a longer side.