This paper focuses on the maintenance of automotive stamping automation equipment. Through long-term self-study and accumulated experience, we independently developed a process monitoring system based on the three pumping stations of clutch, tension pad and lubrication in the stamping automation production line, which is used for realtime monitoring and diagnosis in the automatic production process without stopping the machine, and for the detection of oil temperature change, highpressure pipeline leakage and oil return pipe In this paper, the improved case has strong practicability, low development cost, and has been recognized by peers in terms of cost efficiency improvement, which is easy to be popularized.