Portable tool box

The utility model relates to a portable tool box. Comprising a storage box; a storage groove is formed in the top of the storage box, a partition plate is arranged in the storage groove, and a shielding cover is arranged in the storage box; an adjusting mechanism is arranged in the storage box; through the arrangement of the adjusting mechanism, when the tool box needs to be moved and carried, a pressing ring can be pulled upwards to drive a rack to move upwards, a gear drives a transmission rod to rotate, universal wheels synchronously rotate with the transmission rod, a horizontal state is changed into a vertical state, a plurality of supporting plates are changed into a vertical state to support the pressing ring, and then the rack is positioned; and when the tool box needs to be used, the supporting plate can be pushed back into the pressing groove, then the rack is reset to the initial state under the gravity effect of the tool box, the bottom of the tool box makes contact with the ground, and the possib