To provide a cargo packing method and a cargo packing tool capable of transporting a large amount of soft boards by railways or ships or large-sized trucks and the like, and to enable a large amount of soft boards to be manufactured concentrically at a factory and supply in less-expensive manner over a wide range of application.

A large amount of boards to be packed are stacked up, some protection members are abutted at least on the ridges of long sides and they are wound and fastened by a cargo packing strap band.