The invention relates to a long-span two-body damper, in particular to a long-span special two-body damper which belongs to a protection tool for absorbing the vibration energy of an overhead cable and is especially suitable for complex transmission lines with long span and frequent line vibration. The long-span two-body damper comprises a cable clamp I, a cable clamp II, a pre-twisted wire, a steel strand, a middle hammer, a big hammer I and a big hammer II; a hook-shaped sleeve is respectively arranged at the upper part of the cable clamp I and the cable clamp II, a neck is respectively arranged at the head part of the cable clamp I and the cable clamp II, a through hole is respectively arranged at the lower part of the cable clamp I and the cable clamp II, the hook-shaped sleeves arranged at the upper parts of the cable clamp I and the cable clamp II are sleeved on a cable, the pre-twisted wire passes through the necks at the upper parts of the cable clamp I and the cable clamp II and are fixedly connected with the cable, and the steel strand are arranged in the through holes at the lower parts of the cable clamp I and the cable clamp II in a penetrating way and pressed and fixed; the steel stand passes through the through holes arranged at the lower parts of the cable clamp I and the cable clamp II, the middle part of the steel strand passes through the middle hammer, two ends of the steel strand respectively extend into the bag hammer I and the big hammer II, and the three hammers are connected in series by the adhesion of adhesive.