A　novel　3D　printing　route　to　fabricate　continuous　fiber　reinforced　metal　matrix　composite　(CFRMMC)　is　proposed　in　this　paper.　It　is　distinguished　from　the　3D　printing　process　of　polymer　matrix　composite　that　utilizes　the　pressure　inside　the　nozzle　to　combine　the　matrix　with　the　fiber.　This　process　combines　the　metallic　matrix　with　the　continuous　fiber　by　utilizing　the　wetting　and　wicking　performances　of　raw　materials　to　form　the　compact　internal　structures　and　proper　fiber-matrix　interfaces.　CF/Pb50Sn50　composites　were　printed　with　the　Pb50Sn50　alloy　wire　and　modified　continuous　carbon　fiber.　The　mechanical　properties　of　the　composite　specimens　were　studied,　and　the　ultimate　tensile　strength　reached　236.7　MPa,　which　was　7.1　times　that　of　Pb50Sn50　alloy.　The　fracture　and　interfacial　microstructure　were　investigated　and　analyzed.　The　relationships　between　mechanical　properties　and　interfacial　reactions　were　discussed.　With　the　optimized　process　parameters,　several　composites　parts　were　printed　to　demonstrate　the　advantages　of　low　cost,　short　fabrication　period　and　flexibility　in　fabrication　of　complex　structures.　©　2020　by　the　authors.