The invention discloses a full-automatic clamp. The full-automatic clamp structurally comprises a fixed frame, a movable bolt, a bent piece, novel clamp bodies, fixing bolts, a supporting frame, a fixing frame, a mounting frame, fastening bolts, springs, device shells and carbon bars. The fastening bolts are located on the right side faces of the device shells and connected with the device shellsin a threaded mode; the springs are located inside the device shells and movably connected with the device shells; the carbon bars are located on the left side faces of the device shells and fixedly connected with the device shells; and the device shells are movably connected with the fixing frame. According to the full-automatic clamp, a worker only needs to lightly press spring handles, and thenthe carbon bars can be clamped, so that mounting and demounting are convenient, by using the springs, the carbon bars are better pressed, and the copper plating effect is better.