Milling head is the important actuator of divided milling machine. The strength value of milling machine has big affection in reliability when it working. Thus, the static and modal analysis used finite element software ANSYS has important meanings. The geometric model of milling head was builded by 3D software Pro/E and tested the interference of the model. The finite element was constructed through the connector of Pro/E and ANSYS and made modal and static analysis through ANSYS. The results of dynamic simulation show that there is no interference produced. The results of modal analysis show that there is no resonance phenomenon produced. At the same time, the results of static analysis show that the stiffness and strength is satisfied. Theoretically, the results of software provide references for the structure and optimizing design of the machine.