The core of Rapid Infiltration is filler,with five different filler ratio,study on the treatment effect in different hydraulic loading and controlled conditions,results show that: the removal rate loads up to 1.8m/d,chemical oxygen denmand is better than first class discharge standard in water exit.Compared with conventional biological treatment of sewage,the advantages of Constructed Rapid Infiltration(CRI) are lower energy consumption,less investment,short process,and promotion on the suitabled land area.