The mechanism and the phenomenon of the ice shedding and wind induced vibration of the multi- span transmission lines system including the insulator, the lead wire and other parts are different from the single span. In this paper, the vibration analysis model of a multi-span transmission line is established based on the large finite element software ANSYS. The vibration analysis of the multi-span transmission line shows that the amplitude of the displacement of the ice shedding is increased with the increase of the number of spans from one span to five spans. The axial force of the resistance insulator in the case of resistance-straight- resistance is the maximum, which is increased with the increase of the span. The amplitude of the axial force of the suspension insulator decreases with the increase of the span, but the axial force after ice shedding increases with the increase of the span. The tensile force of the conductor in the ice shedding span is also the largest in the resistance-straight- resistance case, while the axial force after ice shedding increases is the largest in the case of resistance-straight-straight-straight-straight-resistance. The tension of the edge of the edge is decreased with the increase of the cross number.