The dynamic tension caused by the ice shedding of the transmission lines will cause the line fracture and collapse. Taking a project as the prototype, a test model of an iced conductor with scale ratio of 1:30 is designed on the basis of dynamic similarity theory. A program of electromagnet way is developed to control the shedding of concentrated weight considering the cases of zippered and simultaneous ice-shedding. The influence of deicing velocity, deicing direction, elevation difference and vibration-proof hammer on the vibration response of transmission lines ice shedding were studied. The results show that the displacement of zippered ice-shedding is lower than that of simultaneous ice-shedding. Whether zippered ice-shedding or simultaneous ice-shedding, the biggest jump height of the ice-shedding decreases with the decrease of the deicing velocity, and eventually reached up to 50%. Considering vibration-proof hammer, the jump height of the ice-shedding is more obvious. The maximum jumping height of the mid span decreases nonlinear increase with the increase of the elevation difference increases sharply, and the deicing mode from the middle to both sides is the most unfavorable.