Aiming at the straightening problem of round wire of rotating hub straightening machine, the finite element model of the round wire was established in the straightening process. ABAQUS software was used to simulate the straightening process of the rotating hub of the round wire. Based on the large amount of effective data obtained from the practical experience of the enterprise, the four groups of straightening reduction parameters were derived. The straightening process of the whole round wire was analyzed comprehensively by simulating the straightening test of 4 sets of different reduction data. The stress nephogram, stress strain and the straightness of the round wire after straightening were taken as the evaluation indexes. It is concluded that the simulation data of the third group is superior to other groups.