Abstract: In this paper, the thermodynamic analysis of the TC4 workpiece material milled by solid carbide end mill YG6 is carried out from the aspects of cutting force, cutting temperature and chip formation, so as to obtain suitable cutting parameters. Firstly, the end mill is established based on the manufacturing process for the integral end mill, and then the finite element simulation is established according to the improved J-C constitutive model. Secondly, the main cutting force, temperature contour and chip vector diagram were analyzed by changing the feed of each tooth, cutting depth and spindle speed respectively by single factor experiment. The simulation results show that the main cutting force increases with the increase of spindle speed and feed per tooth. The cutting temperature decreases first and then increases with the increase of cutting depth and spindle speed. The cutting temperature decreases as the feed per tooth increases. Finally, by analyzing the cutting layer vector diagram, it is verified that the main cutting force is extruded and piled on the surface of the workpiece in the form of ploughing force when the cutting depth is low, and the main cutting force separates the chips in the form of shear force when the cutting force is high. The simulation results provide a certain guidance for the milling of TC4 material by solid carbide end mill in actual machining and manufacturing.