The　microwave　assisted　solvent　desorption　(MASD)　method　was　examined,　compared　with　direct　desorption,　on　the　regeneration　of　Mg/Al/Fe-LDO　and　the　recovery　of　phosphorus.　These　two　methods　were　investigated　in　terms　of　their　desorption　conditions,　adsorption　capability,　and　the　structure　recovery　of　the　Mg/Al/Fe-LDO　material,　to　reveal　the　desorption　mechanism　of　microwave　assisted　solvent　desorption.　The　results　show　that　by　using　MASD,　the　desorption　time　was　reduced　from　4　h　to　10~30　min　and　the　desorption　efficiency　improved　by　more　than　15%.　Moreover,　under　the　similar　desorption　efficiency,　the　concentration　and　the　usage　of　combined　desorption　agent　(Na2CO3+NaOH)　can　be　decreased　by　2　an　10　fold,　respectively.　After　regeneration　by　MASD-roasting,　the　adsorption　capability　of　Mg/Al/Fe-LDO　material　was　well　recovered.　The　regeneration　rate　of　such　adsorbent　was　nearly　90%　after　three　cycles,　and　is　40%　higher　than　that　of　direct　solvent　desorption,　owing　that　microwave　can　enhance　the　ionic　thermal　movement　of　solvents,　promote　the　process　of　ion　mass　transfer　and　diffusion,　and　accelerate　the　rate　of　ion　exchange.　These　advantages　are　conducive　to　the　effective　restoration　of　the　layered　structure　of　adsorbent　material.　Therefore,　the　MASD　can　achieve　high-efficiency　and　rapid　desorption　of　phosphorus　from　the　Mg/Al/Fe-LDO　with　low　dosage　of　agent,　which　is　helpful　for　the　enrichment　and　recovery　of　phosphorus　in　sewage.　©　2019,　Science　Press.　All　right　reserved.