Suspended carrier is added to the membrane bioreactor as the media of biomembrane,and(it's) two months continual running shows that sludge is unnecessary to be added in the reactor and the suspended solid(SS) is decreased to below 1 g/L,which alleviates the fouling of the MBR system in large extent.Furthermore,for adding the carrier,the time of air uprising in the water is prolonged,so the transmission and availability of oxygen will be improved correspondently,which economizes the dissipation of energy,and widely saves the processing cost.The quality of the outlet water by this process is nearly the same as that by the traditional MBR system and reaches the standard of reused water.