Abstract: With an experimental setup used according to the National Standard, the filtration performance of both the common and high-density surface needle-punched felt as filters was systematically investigated, and the data of filtration resistance were obtained. The results showed that the high-density surface needle-punched felt as a filter shows the typical characteristics of surface filtration at different filtering stages, i.e., the fresh, aged, and stabilized filters are used sequentially. The high-density surface needle-punched felt is superior to the common one in filtration performance as follows: low filtration resistance and its slow increasing rate, long-time filtration cycle and high dust stripping rate.