The utility model discloses a pre-twisted jumper wire drainage hardware fitting, comprising a flow passing body, a pre-twisted fastening strip and a clamping hoop. The upper end surface and the lower end surface of the flow passing body are provided with arc-shaped grooves;the flow passing body is connected to a main wire in an overhead power transmission circuit through the groove on the upper end and is connected to a drainage wire in the overhead power transmission circuit through the groove on the lower end; the pre-twisted fastening strip winds around the the outside of the combination body of the flow passing body, the main wire and the drainage wire and is fixed by the clamping hoop. The pre-twisted jumper wire drainage hardware fitting disclosed by the utility model is low in the manufacture cost and is applicable to the common strain wire clamp to connect the main wire in the construction of the power transmission circuit and traction and paying off. The strain wire clamp can directly pull the main wire to pass through the pulley without the drainage plate and the drainage wire clamp. The wire can be hung up after being payed off. The pre-twisted jumper wire drainage hardware fitting can avoid the repeated crimping of the traction head and the drainage clamp, reduces the losses of the wire, the traction head and the net cover. The construction difficulty is reduced and the construction efficiency is increased.