The utility model discloses a tool box technical field's a car tool box, including the box, one side of second gear is fixedly connected with the output of motor, between motor and battery is electrically connected, the fixed link is equipped with the both sides of screw rod, the surface sliding installation of fixed link has the second sliding block, the surface thread cover of screw rod is equipped with the first sliding block, the both side surfaces of box are opened in arc -shaped hole, the bottom of first storage layer is fixedly connected with the top surface of first sliding block, second sliding block, through being equipped with first storage layer, second storage layer and third storage layer, have increased the containing space of the whole inside box, and it is convenient to carry out the layered placement and take to each kind of tool, through being equipped with first connecting rod, second connecting rod, third connecting rod and fourth connecting rod, the linkage of producing can open first storage layer, third storage layer, sealing cap automatically, and it is convenient to use the inside tool.