Presents　the　results　of　numerical　simulation　for　a　curved　duct　flow　by　means　of　large　eddy　simulation　(LES).　The　finite　element　method　Taylor-Galerkin　scheme　is　used　in　the　simulation.　The　results　of　calculation　coincide　with　Taylor＇s　experiments　reasonably.　It　demonstrates　that　LES　technique　is　especially　available　for　flow　situations　with　complicated　geometrical　boundary　system　in　which　always　exist　anisotropic　large　vortexes.