In　this　article,　a　clear　and　concise　analytical　method　for　predicting　the　performance　of　a　Liquid-cooling　eddy　current　brake　(LC-ECB)　is　proposed.　The　LC-ECB　has　a　coolant　channel　in　the　rotor　to　allow　direct　cooling　of　the　inner　surface　of　the　stator.　The　static　air-gap　magnetic　field　distribution　is　obtained　by　the　dynamic　magnetic　equivalent　circuit　(MEC)　method,　and　the　magnetic　flux　leakage　and　global　magnetic　saturation　effects　are　fully　considered.　The　magnetic　field　intensity　distribution　function　of　the　eddy　current　reaction　magnetic　field　is　derived　for　the　first　time　based　on　Ampere　circuital　theorem.　Considering　the　local　magnetic　saturation　and　skin　effect,　a　novel　double-iteration　algorithm　based　on　the　conservation　principle　of　magnetic　pressure　drop　is　applied　to　obtain　the　transient　air-gap　flux　density　distribution,　and　then　the　brake　torque　expression　is　obtained.　The　finite　element　method　(FEM)　and　experimental　results　show　that　the　proposed　method　is　feasible　and　effective.　The　new　model　is　easy　to　program　and　can　be　easily　used　in　the　initial　design　and　optimization　of　LC-ECB.