Abstract: TiO₂-pillared montmorillonite catalysts were synthesized by the sol-gel method and then treated by ultrasonic and pressure.The catalysts were characterized by XRD，FT-IR and TEM，and the results indicated that all the TiO₂-pillared montmorillonite contained anatase-like TiO₂ particles between silicate layers of montmorillonite.The efficiency of phenol degradation under ultraviolet light with TiO₂-PILM were tested，and the effects of phenol initial concentration and pH value on the efficiency of photocatalytic degradation of phenol were studied.The results indicated that the catalyst treated by ultrasonic and pressure showed higher photocatalytic activity.The efficiency of phenol degradation was higher at initial phenol concentration of 10—20 mg•L^-1，TiO₂-PILM dosage of 1 g•L^-1 and pH value of 3—5.