The causes of death from type 2 diabetes may include cardiovascular disease, infection, and uremia. The most common cause of death in diabetes is cardiovascular and cerebrovascular disease, elevated blood glucose can lead to atherosclerosis, causing myocardial ischemia, cerebral vascular ischemia, serious death due to sudden myocardial infarction and cerebral infarction. At the same time, diabetes in the case of poor glycemic control is prone to complications of various infections, common lung infection. If not timely treatment, will die due to infectious shock. Diabetes may involve the kidneys in the late stage of diabetic nephropathy, and eventually develop into uremia, which in turn requires long-term hemodialysis, often due to complications of cardiac and pulmonary failure and death. Therefore, the diagnosis of diabetes should be in accordance with the doctor’s prescription medication, blood glucose control, to prevent complications, to extend the patient’s life.