Fe/Cu/Ce modified coal-based activated carbon (AC) was prepared by the sol-gel method, and the effect of FedCu/Ce on catalytic properties of Fe/AC, Fe-Cu/AC and Fe-Cu-Ce/AC was investigated in the hydrolysis of carbonyl sulfide (COS) at 50 ℃. Their surface prop-erties were evaluated by means of nitrogen adsorption and were characterized by using scanning electron microscopy (SEM), X-ray diffracto-merry (XRD) and X-ray photoelectron spectroscopy (XPS). The catalytic activities results showed that addition of Cu and Ce could enhance the activities of COS hydrolysis and Fe-Cu-Ce/AC with n(Fe):n(Ce)=20 exhibited a higher stability. The XRD and XPS results revealed that Cu loading controlled the crystalline phases and Ce could affect the crystalline phase of Fe2O3 and change the products formation and content of SO42-.