In　this　paper　we　report　Multi-walled　carbon　nanotubes　(MWCNTs)　have　been　joined　together　by　continuous　wave　fiber　laser　operating　at　1064　nm.　The　SEM　image　clearly　shows　that　there　are　obvious　melting　-　solidified　phenomenon　between　the　jointed　Multi-walled　carbon　nanotubes.　MWCNTs　wall　was　complete　and　smooth　without　destruction　phenomenon.　The　new　graphite　layers　were　found　in　the　connection　with　transmission　electron　microscopy　(TEM).　Besides,　we　observed　that　the　present　multi-walled　carbon　nanotubes　showed　the　trend　of　melting　connecting　to　destruction　as　the　laser　irradiation　time　increased　in　the　case　of　a　certain　power　density.　In　the　end,　there　were　recrystallization　phenomena　during　MWCNTs　joining　with　the　Raman　spectra.　The　crystallinity　and　length　to　diameter　ratio　decreased　following　the　increasing　irradiation　time.