Over　the　past　decade,　researchers　have　demonstrated　much　interest　in　laser　cladded　metal　matrix　composite　coatings　for　its　good　wear　resistance,　corrosion　resistance,　and　high　temperature　properties.　In　this　paper,　in-situ　(Ti,　Nb)C　particle　reinforced　Fe-based　composite　coatings　were　produced　by　laser　cladding.　The　effects　of　Ti/Nb(atomic　ratio)　in　the　cladding　powder　on　the　formation　mechanism　and　distribution　characteristics　of　multiple　particle　were　investigated.　The　results　showed　that　when　Ti/Nb　＞　1,　Ti　had　a　stronger　ability　to　bond　with　C　compared　with　Nb.　(Ti,　Nb)C　multiple　particles　with　TiC　core　formed　in　the　molten　pool.　With　the　decrease　of　Ti/Nb,　core-shell　structure　disappeared,　the　structure　of　particle　got　close　to　that　of　NbC　gradually.　It　is　found　that　the　amount,　area　ratio　and　distribution　of　the　reinforced　particle　in　the　coating　containing　Ti　and　Nb　elements　were　improved,　compared　with　these　in　the　coating　containing　equal　Nb　element.　When　Ti/Nb　=　1,　the　effects　above-mentioned　is　most　prominent,　and　the　wear　resistance　of　the　coating　is　promoted　obviously.　(C)　2014　Elsevier　B.　V.　All　rights　reserved.