The　measurement　error　of　core　loss　by　AC　meter　will　be　very　large　especially　when　the　impedance　angle　of　magnetic　component　is　closed　to　90°.　So　a　new　DC　meter　method　is　proposed　in　this　paper.　The　basic　idea　is　to　transform　the　input　DC　voltage　into　a　square　waveform　on　the　magnetic　component　by　a　DC-AC　inverter,　and　obtained　the　core　loss　by　measuring　the　input　active　power.　The　method　could　avoid　the　influence　of　impedance　angle　to　the　measurement　accuracy.　However,　with　this　method,　the　losses　excepting　for　core　loss　should　be　excluded　someway.　A　method　of　calibration　with　air　core　inductor　is　proposed　to　effectively　calculate　and　take　out　the　losses　except　core　loss.　The　experimental　results　verify　that　the　DC　meter　method　is　accurate　to　measure　the　core　loss　of　low　loss　angle　magnetic　component.