The application discloses tool box includes: the plastic width -lock type single -layer sealed packing case comprises a casin. The case lid, the case lid pass through the hinge with the box links to each other, inlay shock -absorbing structure in the box, shock -absorbing structure includes upper surface and hem, the hem with laminate mutually in the box inboard, the upper surface towards the opening of box, the setting is in a plurality of recesses on shock -absorbing structure's the upper surface, with the label of a plurality of recess one -to -ones, label pasted is in it is just adjacent rather than the recess that corresponds on shock -absorbing structure's the upper surface, the underlined information of mark on the label. The user can directly look over indispensable instrument whether has been placed in each recess, if when not having the sky recess, show then that the instrument among tool box this moment is complete, otherwise, show tool box lacks indispensable instrument to through the label that corresponds with empty recess, judge which kind of instrument what lack be, thereby whether reached the indispensable instrument of verifing tool box fast interior prepares complete purpose.