Diabetes mellitus(DM)is a chronic metabolic disease characterized by sustained hyperglycemia, which can cause systemic macrovascular, microvascular and nervous system complications. The eye is one of the main organs affected by this disease. The ocular complications of DM include DR, however, non-retinal complications are also contained. This review provides an overview of the non-retinal eye diseases associated with DM, including diabetic keratopathy, dry eye, iridocyclitis, glaucoma, cataract, refractive error, optic neuropathy, iridocyclitis, asteroid hyalosis and so on. These ocular diseases may also lead to vision loss and should be taken seriously in diabetic patients.