The frictional characteristic parameters and cutting temperature between the rake face and the chip during the chip forming process of the metal material are the key characterization factors that determine the tool wear,dynamic cutting force characteristics and machining stability.The cutting physical test and mechanical analysis composite method was used to quantitatively calculate the knifechip friction characteristic parameters of martensitic stainless steel in the vertical milling process,and the iterative calibration was based on the physical cutting test measurement value.Quantitative calculation and analysis of the cutting temperature of the knifechip interface were made by the highresolution analytical calculation method of the angular cutting average temperature.The research shows that when the cutting speed is 30~90 m/min and the feed per tooth is 0.1～0.15 mm/z,the increase of cutting speed has a significant influence on the shear angle and the cutting speed of the chip,and the influence on the cutting temperature is also significant.The M C Shaw shear model with iterative correction of the experimental value can be used to realize the effective analytical solution of the average temperature of the bevel cutting,and the solution accuracy meets the actual needs of the project.