Pt-TiO-2 pillared clays were prepared by the Sol-gel method at a certain ratio of Ti(OC-4H-9)-4 to CH_3COOH modified by cationic surfactant cetyltrimethyl ammonium bromide (CTMAB). These composite catalysts were prepared by adding surfactant first, and then pillared with TiO-2 sol solution which was prepared in different Pt contents. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive spectrometry (EDS) were used to investigate the texture of prepared catalysts, and their BET surface areas were also measured. The adsorption and photocatalytic performance of prepared pillared clays were studied by using methyl orange(MO) as a mode organic pollutant. The result indicated that the catalysts obtained layered struc-tures. And the different adsorptions with different contents of Pt were observed. Moreover,the conclusion is reached that Pt can act as separation centers which capture the photogenerated electrons and make a longer electron_hole pair separation lifetime. So it is found that different photocatalytic properties can be enhanced by preparing the catalyst with different Pt contents. An optimal content of 0.2% Pt can achieve the best photocatalytic performance of MO.