The utility model discloses an on-vehicle toolbox, including first layer box and second floor box, the first layer box be the rectangle, second floor box be' protruding' appear, be connected through pivot and branch one end outside the first layer box, the branch other end is connected through pivot and second floor box inboard, the utility model discloses on-vehicle toolbox, mainly used electric power system's machineshop car, this on-vehicle toolbox adopt double-deck box, and some precision instruments and precision instrument and so on are put to upper box, and some wear-resisting or hardness is high instruments are put in the lower floor, for example: the pole climbers are stepped on to the folding ladder, and the rope lock restrains stick etc. With the order, has so both protected the instrument, makes things convenient for the staff to look for the instrument again