The utility model provides a tool set for live working of a transformer substation, which comprises a general tool and a plurality of special tools for live working of the transformer substation, andthe general tool comprises a lower section operating rod, an upper section operating rod, an operating rod joint, an auxiliary rod and an electric wrench; The special tool comprises an electrified lapjoint short circuit line tool composed of a soft copper wire and a hericium erinaceus wire clamp, an electrified connector dismounting device composed of a socket spanner and an electrified polishingtool composed of a steel wire cleaning brush. The lower end of the lower-section operating rod is provided with a sleeve socket connected with an electric wrench; A joint socket is arranged at the upper end of the lower operating rod, a knife switch contact can be polished in an electrified mode through an operating rod joint and a connecting steel wire cleaning brush, the upper operating rod isconnected with a hericium erinaceus wire clamp or a socket spanner, and the work of disassembling a knife switch lead in an electrified mode or overlapping a short circuit in an electrified mode to process heating of the lead joint and the like can be completed. The device has the advantages of being high in universality and practicability, convenient to operate and capable of saving resources andlabor for live working tools and instruments of the transformer substation.