For neovascular glaucoma caused by diabetes, anti-neovascular drugs can be injected into the vitreous cavity to cause the regression of new blood vessels, thereby achieving the goal of reducing intraocular pressure. If not treated promptly, it can cause permanent closure or adhesion of the angle, and surgery is required for treatment. If the lens swells causing secondary glaucoma, it will lead to the closure of the angle. Surgery is needed to remove the cloudy, swollen lens to achieve a reduction in intraocular pressure. Diabetes is prone to various complications, and it is crucial to pay attention to diet and exercise in the presence of diabetes; meanwhile, it is essential to control medication to maintain blood sugar within the ideal fluctuation range.