The invention discloses a production line tool for producing a car sheet metal part die and a using method for the production line tool. the production line tool comprises a tool table and two sets ofsliding frames matched with the tool table and used for supporting and conveying the tool table; the tool table comprises a bottom supporting plate and a rotary table; the center of the top surface of the bottom supporting plate is movably connected with the rotating table arranged on the upper part of the bottom supporting plate through a bearing; a plurality of threaded holes are uniformly formed in the end surface of the rotary table; the plurality of threaded holes are provided with a plurality of clamp fixing rods which are in screwing connection with the threaded holes respectively in amatching manner; and an outer gear ring is connected to and fixed to the side wall of the rotary table in a sleeved manner. For the production line tool, by rotating a handle, an outer extending rodis driven by utilizing a rotating connection relation of a center rod, a transmission rod and the outer extending rod to extend outwards, and the fixing strength of the tool table and the sliding frames are strengthened by connecting an extruding spring for elastically extruding an inner inserting rod and an outer sleeve rod to the outer wall of the inner inserting rod in a sleeved manner, so thatrelative displacement between each sliding frame and the tool table in the processing process is prevented, and the processing precision of the car sheet metal part die is improved.