The invention discloses a transformer cooling fin production line turning sheet moving machine which comprises a rack, a linear driving mechanism, a supporting device and a clamping device, the supporting device is arranged at the bottom output end of the linear driving mechanism, the clamping device is arranged at the bottom of the supporting device, and a pressed device is arranged in a shell and close to a connecting sliding rod. The clamping device is arranged at the end of the connecting sliding rod, the air cylinder is arranged at the position, close to the pressed device, in the shell, the chuck device is arranged on the surface of the clamping base plate, one end of the chuck device is fixedly connected with the end of the curved-surface elastic piece, and the expansion device is arranged in the center of the surface of the clamping base plate. According to the turning piece moving machine for the transformer cooling fin production line, the flexible clamping effect is achieved, cooling fins can be flexibly clamped, the influence of external force or vibration is not likely to happen, clamping is stable, the falling situation is not likely to happen, safety and reliability are achieved, and the working efficiency and the use performance are improved.