The invention relates to the technical field of supplies, in particular to a storage box, comprises a foldable box main body, the bottom of which is provided with a substrate made of soft material, and further comprising a soleplate supporting the box main body, the soleplate being detachably disposed on the substrate. The box main body is also movably connected with a lug plate for resisting against the soleplate. For the storage box disclosed by the invention, during transportation or when not in use, the box main body may be folded conveniently for storage, so that a small space is occupied and convenience and practicality are realized; and when the storage box is unfolded to accommodate articles, four edges of the soleplate placed inside the box main body are resisted against sides of the box main body so that the box main body is kept unfolded.