The invention relates to a contact line terminal clamp which is an improvement of the traditional contact line terminal clamp structure. The clamp comprises an insulator connecting seat, a regulating seat, a vertical regulating bolt, a horizontal regulating bolt, a hinge shaft I, a hinge shaft II and a clamp body, wherein the inner end of the insulator connecting seat is cylindrical and the outerend is provided with a lug plate, a cylinder cavity of the cylindrical inner end is provided with a connecting hole of an insulator, and the lug plate is provided with a shaft hole I vertical to the cylindrical axle center, the upper part of the root part of the lug plate is provided with a protruding regulating bulge, and the outer end face of the regulating bulge is provided with a vertical regulating face. Two thread regulating mechanisms are arranged on the regulating seat, a pair of acting forces, playing a role of balancing the insulator connecting seat and being opposite in direction, are formed on a contact stress point of the vertical regulating face and the vertical regulating bolt and a contact stress point of a lug plate connecting hole and the hinge shaft I; and a shearing load is borne and absorbed by the rigid insulator connecting seat without acting on the insulator, thus the insulator is ensured not to bear the shearing load. The contact line terminal clamp provided by the invention has the advantages of reasonable working state and convenience and reliability for maintenance.