The present invention provides a carbonyl sulfur hydrolyst, including a carrier and an active component, characterized in that the active component of the catalyst includes an active component I and an active component II, the active component I is selected from sodium carbonate, potassium carbonate or their mixtures, the active component II is selected from following metal oxide: Be, Mg, Ca, Sr, Ba, or mixtures of their metal oxides, the catalyst carrier is selected from Al2O3 or mixture of Al2O3 and TiO2 or ZrO2, the percentage by weight in the catalyst: the active component I is 2wt%-15wt%, the active component II is 2wt%-15wt%, the carrier is 70wt%-96wt%. The catalyst is used for carboxide sulphur compound in desorption LPG, natural gas, refinery gas, catalytic cracking process gas, propylene and ethylene, the percent conversion is more than 95%.