Jumper wire lead regulator

Provided is a jumper wire lead regulator, comprising a base plate, a cover plate pivotally connected to the base plate, and an adjusting unit, wherein the adjusting unit comprises a bolt fixed upon the base plate and a nut cooperating with the bolt; the cover plate is provided with a cut; the bolt is capable of slidingly passing through the cut; the nut is fixed to the thread end of the bolt that is exposed to the cover plate and the nut is against the cover plate in an operational manner with a simple structure. To carry out adjustment, a user just needs to loosen or screw the nut of the adjusting unit and pulls the jumper wire lead. Therefore, the operation is simple and convenient, and the working efficiency is high. In addition, the jumper wire lead regulator of the utility model is versatile and applicable to the length adjustment of the jumper wire leads with different diameters.