The utility model relates to a fixing device of high-voltage testing wiring belongs to electric power engineering series resonance withstand voltage test technical field. Technical scheme is: base (5) are square, and four pin patchhole (four to six-tenehs) is provided four corners department respectively, and the center of base is equipped with circular sleeve pipe (2), also is equipped with U type handle (1) and ground point (4) on the base, pin (7) and pin patchhole (four to six-tenehs) phase-match, circular sleeve pipe (2) perpendicular to base, insulator spindle insert the intraductal and fastening connection with it of circular cover, be equipped with fastening bolt (3) on the circular sheathed tube lateral wall, fastening bolt passes through the wire and is connected with the ground point, U type handle is the U-shaped structure, and the two extreme point of U-shaped articulates on the base. The utility model discloses make series resonance withstand voltage test satisfying criteriaization, standardization requirement, effectively shortened the time of fixed high-voltage testing wiring, improved series resonance withstand voltage test efficiency, eliminated personnel, equipment, the potential safety hazard of facility on every side.