A　mathematical　model　for　air-liquid　two-phase　flow　in　rotating　packed　beds　(RPB)　is　established　to　describe　the　real　condition　of　the　fluid　flow　in　the　RPB.　Results　show　that　the　model　can　better　and　reasonably　predict　the　distribution　of　the　air-liquid　two-phase　flow　field,　the　pressure　drop,　the　liquid　film　thickness,　the　proportion　of　the　turbulent　flow　in　the　liquid　film　and　some　other　complex　hydrodynamic　characteristics　in　the　RPB.　The　results　provide　a　theory　basis　for　the,　gas-liquid　two-phase　heat　transfer　and　mass　transfer.