In order to explore the difference of temperature field and force field in different curvature profile milling, the milling numerical models with curvature k of -0.05, 0, 0.05 and 0.33 mm-1 were established by using Deform platform. The single factor control scheme was designed to complete the simulation experiment, and the variation rules of temperature field and force data of milling cutter-workpiece for each curvature profile were analyzed. The approximate laws of tool axial force Fz under different curvature models with the same machining parameters were observed. The results show that the temperature field and force field data obtained by different curvature numerical models have little difference and have approximate under the same process parameters, and the numerical model with curvature k=0 should be selected to obtain the blade deformation load data.