An ice-melting transformer is a power equipment. Its main function is to apply a direct current voltage to the transmission line and short-circuit the end of the transmission line, causing the conductor to heat up and melt the ice on the transmission line, thereby avoiding the collapse of poles and the breaking of lines due to icing. In addition, the ice-melting transformer can also convert alternating current into direct current through a rectifier to heat the iced transmission line and achieve ice melting. It can be used for ice melting on single lines of different lengths, and the operation is relatively simple. In case of ice and snow disasters and other situations, by switching and reconstructing the system, the ice-melting transformer can be quickly constructed as an ice-melting device for the transmission line, ensuring the safe and stable operation of the power transmission channel.