The temperature field produced by grinding would cause different degrees of burn to the specimen according to its own distribution characteristics.An improved theoretical model of heat distribution in surface grinding was proposed,and the finite element model of grinding temperature field was established with ABAQUS.Based on thermal imaging method,a method to study the surface temperature field distribution was proposed,the simulation results were verified,and the processing quality was analyzed by surface morphology.The results show that the simulation results correspond to the temperature of the actual machining process,and the high temperature area is within 1 cm near the center of the workpiece; the depth affected by grinding high temperature only exists in the one third of the depth affected by temperature.