This　paper　introduces　the　preparation　method　and　performance　study　of　chemical　vapor　deposition　(CVD)　tungsten　composite　coating　on　TC4　titanium　alloy　surface.　The　magnetron　sputtering　method　is　used　to　introduce　an　intermediate　transition　layer　to　avoid　corrosion　of　the　titanium　substrate　by　the　formation　of　oxides　on　the　surface　of　the　titanium　alloy　and　HF　formed　by　CVD.　After　the　performance　test,　the　binding　force　of　the　composite　coating　and　the　titanium　substrate　was　improved,　and　the　wear　resistance　and　corrosion　resistance　of　the　titanium　alloy　surface　were　further　improved.　©　2020　IEEE.