Abstract: The contacting area difference between the point grinding and cylindrical grinding was analyzed. Theoretical and finite element models of the temperature field were built based on theories of heat source temperature field distribution and heat transfer. Three dimensional simulation of the temperature field was carried out with the ANSYS software for the contact area between the workpiece and the wheel. Then the distribution of temperature field and the mutative curve of temperature versus time were calculated. The relationship between the max temperature of the grinding zone and the swivel angle α was also studied. The results show that the temperature of the point grinding zone is lower than that of the common cylindrical grinding when α is not 0°. A thin damage layer on the surface is observed from imaging the metallographic structure of the workpiece, which confirms the theoretical analysis and provides a basis for further research on the temperature field of high speed point grinding.