Rigid shaping finite element method and DEFORM-2D were employed to simulate the forging process and distribution of primaryα phase of TC4 titanium alloy spool forging. The distribution of temperature and true strain fields under two forging processes between press forging and hammer forging were compared. The results show that it is easy to produce defects similar to cutting by hammer forging which can be solved by setting appropriate medial inclination of billet.The press forging is the better process of spool forging because of the relatively uniform distribution of temperature, true strain, content of primary α phase and the low risk of forging defects.The content of primaryα phase increases from edge to core of forgingand the distribution basically conforms to the simulation by verification of microstructure.