The suspended ball filler is produced on the basis of a number of sewage treatment material. It is the development of new products. It is mainly the role of biofilm carriers, meanwhile the role of retaining suspended solids. It has following advantages: bio-adhesive force strong, large surface area and high porosity, chemical and biological stability, durable, non-leaching harmful substances, does not cause secondary pollution, anti-UV, anti-aging, strong hydrophilic properties, etc., Any other soft, semi-soft, portfolio, flexible fillers can not be achieved.