Targeting at the situation that development of existing domestic and overseas cable-stayed bridge supporting technologies lags behind, the invention provides an abrasion-fatigue universal test bench of a small-radius large-turn-angle friction-type saddle anchor cable system. The abrasion-fatigue universal test bench comprises steel stranded wire ground-anchoring assemblies, a counter-force beam ground-anchoring assembly, a counter-force beam, a concrete saddle stand, a hydraulic booster, a rolling device, a full-size saddle, pulling cable anchor seats and steel stranded wire anchor plates 15. When the abrasion-fatigue universal test bench is used, pulling cable steel stranded wires penetrate through the full-size saddle, and two ends of each pulling cable steel stranded wire are respectively connected with the steel stranded wire anchor plates on the adjacent steel stranded wire ground-anchoring assemblies. The hydraulic booster drives the concrete saddle stand to perform reciprocating motion so as to simulate the stress and abrasion situations of the pulling cable steel stranded wires on the concrete saddle stand. The abrasion-fatigue universal test bench has the advantages that the full-size saddle with the radius of 2.1 m and the rotating angle of 155.1232 degrees is adopted in the extreme working environment of the pulling cable steel stranded wires with the extreme radius of 2 m, and the simulation degree and persuasion of a test are fully ensured.