The　core　losses　and　winding　losses,　as　two　part　losses　of　a　component,　are　difficult　to　be　separated　in　the　magnetics.　At　present,　there　is　no　effective　method　to　measure　winding　losses　under　the　given　excitation　condition,　and　to　directly　measure　the　winding　losses　of　magnetics　in　power　converters.　This　paper　presented　a　direct　measuring　method　of　winding　losses　for　magnetics,　which　obtained　the　winding　losses　through　adding　an　auxiliary　winding　to　the　magnetics,　and　analyzing　the　relationship　of　the　electrical　parameters　between　the　measured　winding　port　and　the　auxiliary　winding　port.　Finally,　the　air　core　inductor　was　used　as　the　test　object,　the　winding　losses　were　measured　by　high　precision　power　meters　using　the　proposed　method,　which　was　verified　by　the　impedance　analyzer　approach　combining　with　the　calculation,　and　the　feasibility　and　accuracy　of　the　proposed　method　were　validated.　©　2018　Chin.　Soc.　for　Elec.　Eng.