A storage device comprising a body for enclosing an accommodation cavity, a regulating assembly and a first partition frame and a second partition frame for dividing the accommodation cavity, wherein the body comprises a bottom wall, a pair of first side walls and a pair of second side walls, the first partition frame is connected onto the pair of second side walls, the second partition frame is rotatably connected onto the first partition frame around a vertical axis through the regulating assembly, wherein the regulating assembly comprises: a first regulating mechanism (142a,142b), fitted and connected with one of the first and second partition frames (132,131); a second regulating mechanism (141a,141b), fitted and connected with the other of the first and second partition frames (132,131), wherein the first and second regulating mechanisms (142a,142b,141a,141b) are rotatably connected with each other around the vertical axis, to drive the second and first partition frames (132,131) to rotate with respect to each other; characterized in that the storage device further comprises a cam structure, comprising a first concave-convex curved surface formed on the first regulating mechanism (142a,142b) and a second concave-convex curved surface formed on the second regulating mechanism (141a,141b); when the first and second regulating mechanisms (142a,142b,141a,141b) are rotated around the vertical axis with respect to each other, the second and first concave-convex curved surfaces are butted against each other, such that the first and second regulating mechanisms (142a,142b,141a,141b) make reciprocating salutatory movements away from or close to each other in the vertical direction. a first regulating mechanism (142a,142b), fitted and connected with one of the first and second partition frames (132,131); a second regulating mechanism (141a,141b), fitted and connected with the other of the first and second partition frames (132,131), wherein the first and second regulating mechanisms (142a,142b,141a,141b) are rotatably connected with each other around the vertical axis, to drive the second and first partition frames (132,131) to rotate with respect to each other; characterized in that the storage device further comprises a cam structure, comprising a first concave-convex curved surface formed on the first regulating mechanism (142a,142b) and a second concave-convex curved surface formed on the second regulating mechanism (141a,141b); when the first and second regulating mechanisms (142a,142b,141a,141b) are rotated around the vertical axis with respect to each other, the second and first concave-convex curved surfaces are butted against each other, such that the first and second regulating mechanisms (142a,142b,141a,141b) make reciprocating salutatory movements away from or close to each other in the vertical direction. a cam structure, comprising a first concave-convex curved surface formed on the first regulating mechanism (142a,142b) and a second concave-convex curved surface formed on the second regulating mechanism (141a,141b); when the first and second regulating mechanisms (142a,142b,141a,141b) are rotated around the vertical axis with respect to each other, the second and first concave-convex curved surfaces are butted against each other, such that the first and second regulating mechanisms (142a,142b,141a,141b) make reciprocating salutatory movements away from or close to each other in the vertical direction.