The invention discloses a log support for loading long and large logs. The log support comprises a beam assembly, side column assemblies, corner piece assemblies, reinforcing ribs and cover plates; the beam assembly and the two side column assemblies are connected to form a U-shaped frame; the reinforcing ribs are arranged at the corners of the U-shaped frame formed by the beam assembly and the side column assemblies; the cover plates are installed and welded to the upper portions of the reinforcing ribs, the two ends of each cover plate are connected with the beam assembly and the corresponding side column assembly respectively, and a rounded corner with a certain radian is formed at each corner of the U-shaped frame; the two corner piece assemblies are installed and welded to the portions, between the two reinforcing ribs, of the two corners of the U-shaped frame respectively. The log support is of an integrated U-shaped frame structure formed by installing and welding section steeland plates, the side column assemblies apply two forces to the logs laterally to prevent the logs from rolling, and the bottom beam assembly applies a force to the logs from the bottom to support thelogs. The log support has the advantages of high rigidity and high strength.