In the preceding papar, vibrations of twisted rod, whose centroid lies on a straight line and does not coincide with elastic axis, are treated by the assumed-mode method. But, actual turbine blades are twisted about the straight line, called Twist-Axis, and centroidal axes are not always straight. In this paper, vibrations of twisted rod, as shown in Fig. 1(b), are studied analytically. The influences of the position of Twist-Axis, elastic axis and centroid on the natural frequencies are discussed.