A tool box adapted for storing a driving tool therein, the tool box comprises a casing means including a compartment adapted for receiving the driving tool; wherein the compartment further includes a pressing member and a receiving portion below the pressing member and adapted to clamp the driving tool; wherein the pressing member is movable between an original position and an actuating position; wherein while the pressing member is in the actuating position, the driving tool is driven to detach from the casing means.