A novel batch-fed hydrolytic-aerobic recycling process was used in the treatment of PEG-containing waste water and the performance of the process was studied.When the concentration of PEG6000 and CODCr were 1.0 g·L-1 and 2300 mg·L-1 respectively，the hydrolytic-aerobic recycling process could better degrade PEG than the single hydrolytic or aerobic sequencing batch reactor（SBR）process.The recycling rate and volume ratio of hydrolytic and aerobic system were two important parameters，which influenced the treatment capacity of the recycling process.