The　research　progress　in　preparation,　microstructure　and　comprehensive　properties　of　cermet　coatings　is　reviewed　from　three　factors:　spray　technique,　powder　characteristic　and　spraying　parameters.　The　three　factors　control　the　degradation,　oxidation　of　the　ceramic　phase　and　deposition　behavior　of　composite　powders　together,　and　they　affect　the　microstructure,　mechanical　property　and　tribological　property　consequently.　On　the　basis　of　these　studies,　choosing　the　appropriate　spray　technique,　composite　powders　and　spray　parameters　is　the　key　to　obtaining　cermet　coatings　with　excellent　performance.