The invention discloses a single-phase bracing wire tension support and application thereof and belongs to the technical field of iron towers of electric transmission lines. The single-phase bracing wire tension support comprises a main column (1), a first bracing wire (5) and a second bracing wire (6), wherein the main column (1) is provided with a ground wire hanging point and a wire hanging point; the first bracing wire (5) is positioned at the outer side of a corner of the single-phase bracing wire tension support and is a steel strand; the second bracing wire (6) is positioned at the inner side of the corner of the single-phase bracing wire tension support and comprises a bracing wire insulator (61) and a steel strand (62) which are connected with each other; the bracing wire insulator (61) is positioned at one end, which is adjacent to the main column (1), of the second bracing wire (6); bracing wire insulator (61) is used for fixing a wire jumper (4). The single-phase bracing wire tension support is concise in structure and relatively light in weight, and can meet the requirements of all voltage grades for direct current and alternating current transmission lines.