The present invention relates to a fixture of an extra-high voltage underground electric line capable of preventing a bird to sit down on a distribution line or make a nest at a fixing member, allowing a worker to easily perform a substitute work of an insulator, and reducing shock due to strong wind. The fixture of an extra-high voltage underground electric line includes a fixing member formed therein with a long hole which is vertically formed in the longitudinal direction a bracket formed therein with a mounting hole communicating with the long hole and having a &sub-shaped section which is movably installed at the fixing member a body having an insulation material a connector including a pair of mounting projections protruding from a peripheral surface outward and integrated with a upper center of the body and the insulation which has a coupling groove into which the mounting projection is inserted, a spring mounting portion which is formed on the inner upper surface and to which one end of the spring is fixed, and a positioning groove with a guide groove. The fixing member is installed therein with an elastic member having a semi-spherical support member having a disc shape, a guide bar, and a fixing piece while including first and second slide pieces, and is installed therein with a flat member to adjust the position of an overhead line. The insulator is provided therein with a clamp for fixing a bird expeller comprising a banding rubber and a reflective plate and the overhead line while including a spring mounting part, a fixing tool, and a spring. An insulator fixing member comprising a ring and a connection bar connected to the ring is further installed on the lower end of the insulator.COPYRIGHT KIPO 2014본 발명은 조류가 배전선에 앉거나 또는 고정대에 둥지를 트는 것을 예방할 수 있도록 함은 물론 애자의 교체작업을 손쉽게 행할 수 있고 강풍 등에 의한 충격을 완충시킬 수 있도록 한 특고압 배전선의 전선라인 고정대에 관한 것이다.본 발명은 길이방향을 따라 상하로 관통되는 장공이 형성된 고정대와 장공과 상호 연통되는 장착공이 형성되어 고정대에 이동 가능하도록 설치되는 ㄷ자형 단면을 갖는 브라켓과 절연재질의 바디부, 둘레면으로부터 외향으로 돌출되는 한 쌍의 장
