The asymmetric oxidation of sulfides catalyzed by WO3 and 30% H2O2 in the presence of salan as chiral ligands under heterogeneous conditions is described. The reaction system is very easily to be operated. Mild to high chemical yields and moderate enantioselectivities were obtained. The asymmetric oxidation of sulfides catalyzed by WO3 and 30% H2O2 in the presence of salan as chiral ligands under heterogeneous conditions is described. The reaction system is very easy to be operated. Mild to high chemical yield and moderate enantioselectivities were obtained.