The invention belongs to the technical field of power transmission line vibration resistance, and discloses a power transmission line aero-vibration electromagnetic anti-vibration fitting comprising a first steel strand, a wire clamp and two mass units. The wire clamp is fixed on the first steel strand in a penetrating way. Each mass unit comprises two U-shaped steel magnets, a connecting rod, two copper plates and two second steel strand ropes. The two U-shaped steel magnets are a U-shaped steel magnet A and a U-shaped steel magnet B. The N-pole of the U-shaped steel magnet A is opposite to the S-pole of the U-shaped steel magnet B and the two poles are connected through one second steel strand rope. Besides, a gap also exists between the S-pole of the U-shaped steel magnet A and the N-pole of the U-shaped steel magnet B, and the two poles are also connected through one second steel strand rope. One copper plate is fixed on each second steel strand rope in a penetrating way. The power transmission line aero-vibration electromagnetic anti-vibration fitting has the advantages of being reasonable in structure, easy to manufacture, high in energy consumption capacity and wide in lead vibration suppression spectrum range so as to be widely used for power transmission line aero-vibration resistance control.