Optical coherence tomography angiography(OCTA)is a quick, non-invasive imaging technology which can both qualitatively and quantitatively analyze retinal blood perfusion that is now more widely used in clinical practice. Choroidal neovascularization(CNV)is the main cause of loss of vision in the elderly and is caused by neovascular age-related macular degeneration(nARMD). Therefore, the detection of CNV in nARMD is of extreme importance. In this paper, the research progress of OCTA in diagnosing and treating nARMD was reviewed by analyzing the diagnosis, morphology, area and blood perfusion of CNV.