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 respectively; under a state that the primary box body and the secondary box body are split, the barrel-shaped rings which make up the inner-layer box body are separated in a staggered mode; a grating is formed in one side of each of the side opening of the primary box body and the side opening of the secondary box body; ring-shaped grooves are formed in inner wall surface of the primary box body and the inner wall surface of the secondary box body; and under a state that the primary box body and the secondary box body are combined, the grating of the primary box body and the grating of the secondary box body are mutually inserted in the staggered mode. The storage box solves the problems that a current storage box is single in function, and is lack of enjoyment.