Using zinc silicate prepared in the lab as the catalyst, the impact of catalyzing ozonation on filtered water quality in continuous-flow experiment is studied. The results indicate that, under the same experimental conditions, the existence of zinc silicate can improve the concentration of ozone in water. Using zinc silicate catalyzing ozonation is more efficient than adopting ozonation alone in removing total organic matter(TOC)and natural organic matter in filtered water. During the 10 h continuous run, TOC removal efficiency is kept stable, with little leaching of Zn²⁺ observed in the treated water sample. The assimilable organic carbon(AOC)test results show that the proportion of big molecular organic compounds in the water decreases after the catalytic ozonation process, while the amount of small organic compounds increases. The results of GC-MS indicate that adopting ozonation alone can reduce the kinds of organic compounds from 41 to 27. While adopting zinc silicate catalyzing ozonation can decrease the ultimate number to 21, which shows great more efficiency than using ozonation alone.