Abstract: By using self-developed high stretch yarn terylene fiber-ball filtermedia in the treatment of landscape water, the filtering characteristics and effect of correlative factors on filtering performance were studied. The results showed that the effluent turbidity could maintain 3～5 NTU without any coagulantswhen the filtration velocity and the average influent turbidity were 30　m/h and 87.5　NTU, and the filtration cycle of this type filter could reach 16.5　h. When the filtering velocity, influent turbidity and addition of PAFC were 30～50　m/h,50～70　NTU and 12　mg/L, respectively, the effluent turbidity maintained below 1 NTU. At the same time, the filtration cycle was above 6　h, and pollution catching reached as much as 30～45　kg/m³. It was also found that, when the air and water intensity of back-washing were 25　L/(s·m²) and 8　L/(s·m²), the weight of residual sludge was about 4.53% of the filter itself.