The invention discloses a wiring method for realizing full-automatic line direct-current ice-melting operation, relates to a grid power transmission line direct-current ice-melting technique and aims at providing a full-automatic operation method for realizing the connection between a direct-current ice-melting device and an ice-melting line and the short-circuit connection between the direct-current ice-melting device and the threes phases of the ice-melting line. The wiring method is technically characterized in that a special isolating switch for the connection between the direct-current ice-melting device and the ice-melting line is used for realizing the automatic connection between one side of the ice-melting line and the direct-current ice-melting device, and a special common-fixed-contact isolating switch for the short-circuit connection of the direct-current ice-melting line is used for realizing the automatic short-circuit connection of the A phase, the B-phase and the C-phase of the ice-melting line. The wiring method realizes the full-automatic wiring for the power transmission line direct-current ice-melting, can greatly shorten the line cutoff time during ice-melting, and has the advantages of small occupied area and good implementation feasibility.