For　getting　better　properties　and　simplifying　the　process,　the　Cf/Cu　composites　were　prepared　by　one-step　hot-pressing　sintering.　The　mechanism　of　the　interface　reaction　between　Cu　and　carbon　fiber(Cf)　and　the　microstructure　of　Cf/Cu　composites　were　studied.　The　effects　of　different　Ti　contents　on　the　density,　hardness　and　bending　strength　of　Cf/Cu　composites　were　investigated.　The　results　indicate　that　TiC　layer　surrounding　Cf　is　generated　in　the　ternary　system　of　CuCTi　and　the　TiC　layer　decreases　the　wetting　angle　between　the　liquid　Cu　and　the　solid　Cf,　which　improves　the　combination　between　Cu　and　Cf.　The　mechanism　of　formation　of　TiC　layer　was　discussed　and　a　microstructure　model　of　the　reaction　between　Ti　dissolved　in　the　liquid　Cu　and　C　was　brought　forward.　The　formation　of　TiC　layer　is　good　for　increasing　the　properties　of　the　composites.　When　the　mass　fraction　of　Ti　is　16.7%,　the　synthetic　properties　of　the　composites　are　the　best　in　this　system　with　Shore　hardness　HS66.94　and　flexural　strength　97.59MPa.