Objective:　To　explore　the　feasibility　of　preparing　an　iodine-coated　titanium　plate　with　potassium　iodide　and　verify　its　antibacterial　performance.　Methods:　Iodine　was　coated　onto　the　surface　of　a　titanium　plate　in　electrolyte　of　potassium　iodide　using　the　electrophoretic　deposition　method.　The　signs　and　composition　of　the　surface　of　the　iodine-coated　titanium　plate　were　observed　by　scanning　electron　microscopy　and　energy　dispersive　spectroscopy.　The　experiment　was　conducted　in　a　control　group　and　3　antibacterial　test　groups.　The　control　group　consisted　of　10　titanium　plates　which　had　been　pretreated　but　not　loaded　with　iodine;　the　3　experimental　groups　also　had　in　each　10　titanium　plates　which　had　been　pretreated　and　loaded　with　iodine　in　the　electrolytes　of　concentrations　of　1,　000　mg/L,　2,　000　mg/L　and　4,　000　mg/L,　respectively.　The　antimicrobial　tests　in　vitro　were　conducted　with　standard　strains　of　staphylococcus　aureus　[1×106　Colony-Forming　Units　(CFU)/mL　ATCC25923]　to　determine　the　antibacterial　property　of　the　plates.　Results:　The　iodine-coated　titanium　plates　appeared　grey　and　their　surface　was　evenly　covered　with　a　flat　coating　with　no　collapse.　The　scanning　electron　microscopy　observed　on　the　surface　of　the　iodine-coated　titanium　plates　an　iodine　coating　with　scattered　irregular　collapses　in　different　sizes.　The　iodine　content　was　0　mass%,　5.10　mass%,　10.32　mass%　and　15.05　mass%,　respectively,　in　the　control,　1,　000　mg/L,　2,　000　mg/L　and　4　000　mg/L　groups　under　the　energy　dispersive　spectroscopy.　Their　counts　of　in　vitro　antibacterial　colony　were　56.00±5.09,　21.40±2.76,　9.10±2.51,　and　2.00±1.88,　respectively,　showing　significant　differences　between　groups　(P<　0.05).　Conclusions:　A　titanium　plate　with　a　steady　and　even　iodine　coating　can　be　prepared　by　virtue　of　the　electrophoretic　deposition　method　in　electrolyte　of　potassium　iodide.　The　antibacterial　property　of　an　iodine-coated　titanium　plate　is　superior　to　that　of　a　titanium　plate　without　iodine　coating.　Copyright　©　2020　by　the　Chinese　Medical　Association.