The invention discloses a suspension tension string connecting device. The suspension tension string connecting device comprises a pre-posed unit, a double-layer triangle plate (15) and two-to-eight yoke plates (21); three hanging string holes (15.1) are formed in the double-layer triangle plate (15); two hanging string holes (34) and eight ring hanging holes (32) are formed in each two-to-eight yoke plate (21); the pre-posed unit is connected with one hanging string hole (15.1) of the double-layer triangle plate (15); the other two hanging string holes (15.1) of the double-layer triangle plate (15) are connected with the hanging string holes (34) of the two two-to-eight yoke plates (21) at the front side and rear side of suspension tension strings respectively; and the ring hanging holes (32) of the two-to-eight yoke plates (21) are connected with wires (39). The suspension tension string connecting device of the above structure can meet functional requirement such as rotation, wire pressure withstanding, chained collapse, accident isolation and tower height adjustment; the problem of the torsion of the yoke plates can be well solved; project cost can be reduced; and direct jump connection can be realized, and project cost can be further decreased.