The　WC-12Co　coatings　were　sprayed　by　different　supersonic　thermal　spraying　processes　of　supersonic　plasma　spraying　(HEPjet)　and　two　kind　of　high　velocity　oxy-fuel　spraying　(HVOF)　(JP-5000,　DJ-2700).　The　contrast　tests　of　porosity,　micro-hardness,　bonding　strength,　erosion　of　30°　jet　or　90°　jet　angle　were　carried　out,　and　SEM　morphology　of　coatings　was　analyzed.　The　results　showed　that　main　properties　of　the　WC-Co　coatings　by　the　supersonic　plasma　spray　were　equivalent　to　that　of　coating　by　JP-5000,　and　better　than　that　of　coating　by　DJ-2700.　At　30°　jet　angles,　erosion　wear　behavior　of　WC-Co　coating　presented　the　characteristics　of　micro-cutting　and　scale　exfoliation;　at　90°　jet　angles,　the　coatings　presented　the　fatigue　desquamation　due　to　the　upright　wallop　of　particles　on　the　coating　surface.