Adjustable storage box of steel structure connecting plate

The utility model discloses an adjustable storage box of a steel structure connecting plate. The adjustable storage box comprises a bottom plate (1), a stacking plate (2), a plate taking assembly, a partition plate (3), an upper cover plate (4), a side plate (5) and a sliding door plate (7). The side plates are adjustably connected to a pair of short edges of the bottom plate, and the sliding door plates are adjustably connected to a pair of long edges of the bottom plate, so that a hollow storage box structure with an opening in the top is formed; the partition plate is arranged on the bottom plate, the storage box structure is divided into two storage cavities through the partition plate, and the upper cover plate is installed at the top of the partition plate and covers the tops of the pair of side plates and the tops of the sliding door plates, so that the top of the storage box structure is closed; the plurality of stacking plates are arranged in the storage chamber and divide the storage chamber into a