A storage cabinet structure has a front frame, a supporting set, a rear frame, a bottom board and a top board. The semi-composed state of the front frame and the rear frame can save a large amount of assembly time for the user, and the first bolt, the second bolt and the third bolt allow the user to lock the front frame, the supporting set, the rear frame and the top board to achieve DIY assembly without any tools and have the advantages of simplifying assembly steps and being easy to assemble by one person. The direct placement of the bottom board is fixed with the sliding of the divider, and then the fixing of the top board forms a barrier to the bottom board and the divider, thereby effectively saving assembly time and reducing the number of parts, and has the practical function of tool-free, simplified assembly steps and quick assembly by one person.