Abstract: In order to improve the process and prolong the fatigue life of the gear made from Material 18CrNi4A,a new method was proposed to control the manufacturing process of gear and to prevent the grinding burns emerging in this process.Firstly,a model was developed based on ABAQUS finite element simulation method to simulate the gear grinding process and to analyze the influence of process parameters,such as grinding wheel speed and grinding depth,on the grinding temperature field of Material 18CrNi4A.And then,the influencing weights of each process parameter on the grinding temperature field were established to provide a reference for the study of grinding parameter control according as burn performance.Finally,a Material 18CrNi4A gear grinding test was carried out to verify the reliability of finite element simulation analysis result and to obtain the critical temperature of Material 18CrNi4A grinding burn.The analysis and test results can provide a certain theoretical guidance for the grinding process parameter decision of the Material 18CrNi4A gears.