The　effect　of　Cr　additions　on　the　microstructure　and　corrosion　resistance　of　CuAl10　coating　deposited　by　laser　cladding　was　investigated.　Laser　cladding　was　performed　using　a　4000　W　Diode　laser　under　the　same　conditions,　and　the　premixed　powders　with　different　weight　ratios　of　CuAl10　to　Cr　were　fed　synchronously　by　TWIN10C　powder　feeder　and　D70　coaxial　nozzle.　The　microstructures　were　observed　under　a　scanning　electron　microscope　equipped　with　an　energy　dispersive　X-ray　spectrometer　(EDS)　for　chemical　analysis,　and　phase　analysis　was　performed　with　an　X-ray　diffractometer　(XRD).　The　electrochemical　corrosion　behaviors　of　cladding　layers　were　evaluated.　The　results　showed　that　the　CuAl10　coating　has　a　good　metallurgical　bonding　with　the　17-4PH　substrate.　The　addition　of　Cr　can　improve　the　corrosion　resistance　of　CuAl10　coatings,　and　the　passivation　ability　of　the　coatings　increases　with　increasing　Cr　contents.　The　CuAl10　coating　without　Cr　addition　include　alpha,　gamma(2),　and　K　phase;　however,　the　addition　of　Cr　leads　to　an　increase　of　beta＇　phase　and　Cr　and　a　decrease　of　gamma(2)　and　K　phase　in　the　CuAl10　coating.