The　microstructure　of　laser　clad　Co　covered　(WC+W2C)　powders/Ni-based　alloy　composite　coatings　has　been　investigated　with　XRD,　SEM　and　microhardness　measurements.　The　behavior　of　Co　covered　(WC+W2C)p　during　laser　cladding　has　also　been　analyzed.　Results　show　that　the　Co　cover　of　the(WC+W2C)p　powders　is　melted　away　and　mixed　with　the　laser　melt,　the　partial　dissolution　of　(WC+W2C)p　powders　also　occurs　during　laser　cladding,　and　the　stability　of　the　powders　is　associated　with　the　W2C/WC　ratio.　While　the　laser　melt　pool　solidifies,　the　(WC+W2C)p　distribution　in　the　composite　coating　is　primarily　controlled　by　the　strong　convection　in　the　laser　melt　pool　and　the　interaction　between　the　powders　and　the　solidification　front.　Depending　on　local　elemental　concentrations,　η1-M2C　type　(M=Co,　W,　Ni)　carbides　with　varying　compositions　form　in　the　coating,　preferably　on　the　surface　of　(WC+W2C)p　or　in　close　vicinity　to　them.　Solidified　microstructures　of　laser　melt　widely　differ　throughout　the　coating,　and　the　typical　microstructure　is　composed　of　η1-M2C　carbides　distributed　in　a　multi-component　pseudoeutectic,　which　predominantly　consists　of　γ-Ni+M23C2,　borides　Ni4B3,　Ni3B　and　carbide　M7C3.