The utility model relates to a line-shaped linkage plate used in the suspended tension insulator string of EHV transmission line, solving the problem of large weight of single piece and small split number of prior linkage plate used in the suspended tension insulator string of electric transmission line. The utility model is provided with a lower linkage plate, characterized in that an upper linkage plate is installed on the lower linkage plate, wherein the upper linkage plate and the lower linkage plate are connected together by a line-shaped suspension plate, and the upper linkage plate and the lower linkage plate are respectively provided with four open holes of cable cleats. The utility model has the advantages that: by using the split structure and high-strength materials, the strength is increased and the weight is reduced as well, convenient for installation and carrying; the upper and lower linkage plates are connected together by a suspension plate, buffering the torsion of swing caused by wind; the upper linkage plate and the lower linkage plate are respectively provided with four open holes of cable cleats, being able to install eight suspension clamps, the bigger split number is adapt to the requirements of eight multiple conductors of 1000 KV EHV transmission network.