The technology of aerobic granules sludge is a kind of new biochemical technology to treat waste water. It has compact structure, good settling ability and a excellent ability of biological treatment. Aerobic granules with carrier were successfully cultivated through adding activated carbon(AC)grain together with inoculated sludge. They have stable structure, good settling ability and excellent removal effect of N. This study investigated the process of floc sludge-small particles-ripe aerobic granules, storage, disintegration, recovery and the feasibility in low C/N wastewater treatment. The removal efficiency of COD, NH+4-N and TN reached 80%~90%,99%,80% respectively. After storing the AC aerobic granular sludge for 12 months and forteen days recovery, the morphology and properties of the granules recover completely.