Storage box

The invention discloses a storage box, and belongs to the technical field of goods storage. A barrel-shaped box body is composed of an outer-layer box body and an inner-layer box body, wherein the outer-layer box body comprises a primary box body and a secondary box body; the primary box body and the secondary box body are provided with side openings which are divided in an axial direction; a bottom plate is arranged on the bottom of each of the primary box body and the secondary box body; the side opening of the primary box body and the side opening of the secondary box body are oppositely enclosed and combined in a detachable mode; the bottom plate of the primary box body and the bottom plate of the secondary box body are superposed up and down; the inner-layer box body consists of a plurality of barrel-shaped rings which are superposed in an axial direction; two adjacent barrel-shaped rings are correspondingly fixed to the inner wall of the primary box body and the inner wall of the secondary box body resp