To easily store, transport, load and unload a particulate body containing natural gas hydrate, methane hydrate, carbon dioxide hydrate, etc., and having mutually sticking properties.

A method for loading and unloading the particulate body into an apparatus provided with a container for the particulate body, partition parts for finely partitioning the container, and a driving part for vibrating the partition parts, is provided. The particulate body is carried into rooms divided by the partition parts, and the partition parts are vibrated by the driving part. When unloading is performed, the partition parts are vibrated by the driving part to discharge the particulate body.