This paper reviews the sources,emissions,transfer of microplastics and their major health risks,describes the research progress on microplastic removal by more widely used advanced oxidation proces-ses,such as UV/H2O2,ozone/H2O2,UV-induced photocatalysis,solar/visible light-induced photocataly-sis,and sulfate radical advanced oxidation,and gives a future research direction on the treatment of micro-plastics by advanced oxidation processes.