The AGC thickness control system integrates monitoring, pre-control, second flow acceleration, and deceleration thickness compensation functions to achieve high-precision thickness control and ensure the high-precision requirements of finished plates. The tandem cold mill has automatic sequential control and continuous adjustment control functions. The intelligent human-machine interface simplifies the operation process, supports process parameter setting and real-time monitoring, and dynamically displays the production process, fault diagnosis, and online monitoring information to reduce the difficulty of operation. It is equipped with multiple safety interlock designs to ensure the safety of equipment operation and operators.