Abstract: Two-dimensional braided structure cored rope was tailored to conquer the problem of higher strength and modulus ropes used on large net-shape deployable Antennas. Shimadzu universal testing machine was used to test the tensile strength of the samples with different braiding parameters, and the tensile fracture mechanism and failure mode was analyzed. The results showed that the structure rope was stable and the utilization of fiber strength was much higher. Rope was a high strength, high modulus, and low elongation. Braiding parameters had great impact on the rope of strength and breaking elongation. Braiding angle of braiding yarn determined the core yarn wrapped tightly. The greater proportion of core yarn fibers was, the more obvious advantages of the core structure was. In the tensile test process, the core yarn was the main load-bearing, braiding yarns played a role of binding and protection the core yarn.