The fiber ball filter material is made of fiber yarn. It has the advantages of good elasticity compared with the traditional steel particle filter material, no floating surface, large gap, long working period and small head loss. During the filtration process, the gap of the filter layer gradually becomes smaller along the direction of the water flow, which is more consistent with the ideal filter material released from the upper and lower pores, high efficiency, fast filtration speed (20-85m/h), large interception capacity, good filtration effect. Recyclable, backwashing with gas and water, flushing water is 1-2% of filtered water, suitable for filtration of various water quality. The filling height of the fiber ball filter is 120cm, and the fiber ball filter is naturally reduced by about 30cm after entering the water.