The　falling　film　flow　characteristics　of　a　liquid　on　the　surface　of　corrugated　sheet　packing　are　crucial　for　its　mass　transfer　performance　in　various　industrial　applications.　In　this　study,　a　falling　film　flow　experiment　with　laser-induced　fluorescence　technology　was　conducted　to　validate　the　flow　characteristics　of　a　falling　film　simulated　using　computational　fluid　dynamics　(CFD).　The　influences　of　Reynolds　number　(Re)　and　the　packing　structure　on　flow　characteristics　were　analyzed　with　quantitative　film　thickness　and　wetted　area　obtained　through　three-dimensional　simulation.　The　results　show　that　the　CFD　model　can　accurately　predict　the　liquid　falling-film　flow　behavior　and　calculate　the　characteristic　parameters.　For　sinusoidal　corrugated　sheets,　when　Re　reaches　500,　the　groove　flow　changes　into　a　rivulet　flow　along　the　adjacent　ripples　and　the　wetted　area　is　at　its　largest,　about　0.022　m(2).　However,　relative　to　the　geometric　area　of　the　corrugated　sheet,　the　wetted　area　can　only　reach　20%　of　the　surface　area,　and　the　overall　wetting　performance　is　still　poor.　Triangular　and　trapezoidal　corrugated　sheets　were　further　proposed　and　proved　to　improve　the　wetting　area　compared　with　the　sinusoidal　sheet,　with　maximum　increases　of　23%　and　9%,　respectively.　On　this　basis,　extensive　research　was　carried　out　on　the　corrugation　angle.　The　results　show　that　a　triangular　corrugated　sheet　with　a　75　degrees　corrugated　angle　was　more　conducive　to　the　flow　of　the　liquid　film,　and　the　wetted　area　was　38.8%　of　the　surface　area.