Forming process of 4Cr9Si2 martensite refractory steel by cross wedge rolling is simulated by means of rigid-plastic DEFORM-3D software. The influence regularities of cross wedge rolling technical parameter—wedging tip fillet for surface spiral, internal defeats, size reduction on center of symmetry are obtained:It is obvious that surface spiral will be reduced with increasing of the wedging tip fillet due to surface radial force decrease; The duration time of transverse stress and shear stress will be incr...