Abstract: The PDMS and CDP-filled PDMS membranes were prepared by the phase inversion approach using polydimethylsiloxane as precursor, tetraethyl orthosilicate as crosslinker, dibutyltin dilaurate as catalyst and chloroform or heptane as solvents. Pervaporation separation of phenol aqueous solution using unfilled PDMS and CDP-f-PDMS membranes was investigated. It was demonstrated that the separation performance of PDMS membranes was improved by incorporating CDP into PDMS membrane. The effects of solvent type and filling amount of CDP on pervaporation properties were examined. The effects of the operation parameters including feed temperature, feed flow rate and feed concentration on pervaporation properties were also investigated. The permeation flux and separation factor could be 34.5 g•m^-2•h^-1 and 10.3 when the experimental temperature was 67℃ and the filling amount is 2%.