Abstract: Failure analysis proved that the camshaft induction quenching mass defect and the grinding burn caused by the camshaft fine grinding process were the main causes of the abnormal camshaft wear. The grinding burns was completely eliminated through repairing the grinding wheel, optimizing the grinding process parameters, adopting a better grinding burn detection method, and increasing the frequency of grinding burn detection. The induction quenching quality was significantly improved by optimizing the size of induction heater, induction quenching parameters and improving the detection method after induction quenching. Finally, the process optimization measures was cured and applied in the actual production, and the abnormal wear problem of camshaft short mileage had been basically solved.