The　marine　corrosion　resistant　steel　DH36　plates　of　12　mm　thickness　were　welded　by　using　fiber　laser-MIG　hybrid　welding　process.　The　effects　of　wire　feeding　speeds　on　the　cross　section　shapes,　microstructures,　mechanical　properties　and　corrosion　resistance　of　the　joints　were　studied.　The　results　show　that　with　the　wire　feeding　speed　increasing　from　7.0　m/min　to　8.5　m/min,　the　weld　width　of　arc　zone　rises　from　8.44　mm　to　10.03　mm　while　the　weld　width　of　laser　zone　increases　from　1.63　mm　to　2.09　mm.　The　wire　feeding　speeds　have　no　obvious　influence　on　the　phase　types　of　weld　microstructures,　which　consists　predominantly　of　acicular　ferrite　(AF),　pro-eutectoid　ferrite　(GBF)　and　a　small　amount　of　bainite　(B).　As　the　wire　feeding　speed　increases,　the　morphology　and　amount　of　AF　were　changed.　The　microstructure　of　the　HAZ　of　the　joint　was　composed　of　ferrite　(F),　pearlite　(P)　and　a　small　amount　of　bainite　(B).　In　addition,　the　increase　of　wire　feeding　speeds　has　little　effect　on　the　joint　strength,　but　has　an　significant　effect　on　the　elongation　of　the　joints.　Increasing　the　wire　feeding　speed　reduces　the　elongation　of　the　joints,　and　when　the　wire　feeding　speed　is　7.0　m/min,　the　elongation　is　up　to　16.5%.　The　polarization　curves　of　the　joints　showed　that　the　corrosion　tendency　was　the　lowest　when　the　wire　feed　speed　was　7.5　m/min　and　the　corrosion　tendency　was　the　highest　when　the　wire　feed　speed　was　7.0　m/min.　©　2019,　Editorial　Board　of　Transactions　of　the　China　Welding　Institution,　Magazine　Agency　Welding.　All　right　reserved.