Provided are a high-strength fiber composite and an applied product thereof, whereby it is possible for the inherent tensile strength of high-strength fiber yarns to be obtained, even when used in applications in which bending stress occurs, such as wires, or when stored while wound around a drum or the like. This high-strength fiver composite has a core produced by imparting twist to a high-strength fiver bundle produced by bundling high-strength fiber yarns, and a stiffening the twisted high-strength fiber bundle with a stiffening agent. In this high-strength fiber composite, the high-strength fiber yarns are resistant to breakage even when flexed, have a superior shearing strength, and can maintain the inherent tensile strength of high-strength fibers, even when used in applications in which bending stress occurs, such as wires, or when stored while wound onto a drum or the like. The strand structure, which has a strand construction composed of two or more of the high-strength fiber composites twisted together, maintains the inherent strength of the high-strength fibers, and affords more consistent tensile strength, as compared with when an equal number of high-strength fiber composites lacking the strand construction are used.