Neovascular glaucoma(NVG)is a refractory blinding eye disease that adds a heavy burden to society. The incidence of neovascular glaucoma is related to a variety of factors, such as retinal ischemia and hypoxia, inflammation and trauma. There are more than 40 diseases that can cause it to occur, among which the most common in clinical is diabetic retinopathy and central retinal vein occlusion. Because of its complex etiology and the pathogenesis remains unclear, clinical treatment is extremely difficult. This paper summarizes some related researches in recent years. Finally, the onset and treatment of neovascular glaucoma are elaborated in order to be expected to help clinical work.