The invention relates to a split-phase electrified deicing device, belonging to mechanical and electrical integrated deicing equipment for a power transmission line. A control part consists of a transmitter, a receiver and a control circuit. A mechanical part comprises a traveling unit, a deicing unit and the like. In the traveling unit, a traveling wheel is a gear with a groove in the middle anda traveling motor drives the traveling wheel to rotate through a driving gear to move forwards or backwards along the power transmission line; and the deicing unit consists of a double-pendulum striking hammer which is installed on a motor and rotates forwards and backwards within 180 degrees together with the motor so as to strike to remove ice covering the power transmission line. In consideration of balance during movement, a dynamic balance device is also designed and consists of a liquid level switch, a set of gear transmission mechanism and a counterbalance. When a bottom plate tilts, the liquid switch is turned on, the motor is electrified to drive the gear transmission mechanism to rotate, the counterbalance is enabled to move on the bottom plate to change the gravity center of the device and therefore the bottom plate is kept in a balanced state. The split-phase electrified deicing device has the advantages of remote control, automatic traveling and automatic icebreaking.