摘要： 介绍了聚对苯二甲酸乙二醇酯（PET）及其废弃物的处理方法、新型PET水解酶(PETase)的降解活性及相关影响因素，总结了PETase的结构和催化降解机制，并对PETase生物降解的研究方向进行了展望。

Abstract: This paper overviewed the disposal of polyethylene terephthalate (PET) waste, and the biodegradation and relevant influence factors of a new PET hydrolase PETase. The structure and catalytic mechanism of PETase were summarized, and the future research direction of the biodegradation of PETase were prospected.