Milling force is an important factor affecting tool durability and machined surface quality. Cutter geometry angle has a great influence on the milling force during metal cutting. Based on ABAQUS, the key technologies in the metal simulation process of turbine thin-walled blades as objects are studied. The simulation model of machining thin walled blades was put forward. On the basis of the above analysis, the single-factor and multi-factor of orthogonal simulation experiments analysis about the cutter geometry angle were carried out, and the empirical model of milling force was established. Experiment shows that the results of finite element method 〖JP2〗(FEM) simulation of milling force are approximately the same as that of experimental test, and the results obtained are basically effective.