In this study, the hyperbola kinetic model of simultaneous catalytic hydrolysis CS2 and COS was investigated. Through the experimental results, it can be found that catalytic hydrolysis of CS2 and COS is the controlling step for the whole reaction. Meanwhile, the theoretical calculation results showed that COS is easier to adsorb on the surface of catalyst than CS2. The XPS results showed that H2S was oxidized to elemental sulfur and sulfate was the main reason for the deactivation of the catalyst.