The utility model discloses a self -supporting cable support, which comprises a column, the top and the building ceiling of stand are connected, the bottom sprag of stand is on the building terrace, the stand is equipped with the trailing arm along the direction of height, be equipped with between stand top and the building ceiling and adjust prestressing mechanism. The utility model discloses an adjusting the dismouting that prestressing mechanism realized the stand, arranging the stand in a flexible way, the trailing arm mounting panel combines with the stand of cylinder, quantity and interlamellar spacing and installation angle that the trailing arm that makes the cable support can be installed according to the adjustment of actual engineering demand.