Reliable assembly business library

The utility model relates to a reliable assembly business library, which comprises a library door, a bottom plate, four side plates and a top plate, the side plates are respectively and vertically positioned on the left side, the right side, the front side and the rear side of the bottom plate, the side barrier strips of the adjacent side plates are attached to each other, and one of the two attached side barrier strips is connected with the top plate. Wherein one side barrier strip is provided with a plurality of inserting pieces inserted into the other side barrier strip in the vertical direction, the inserting pieces of the barrier strips on the same side are provided with vertically-corresponding assembling holes respectively, the bottom plate is fixedly provided with assembling columns penetrating through all the assembling holes of the barrier strips on the same side at the same time, and the garage door is provided with a pre-alignment mechanism used for installing hinges. By adopting the scheme, the u