There are two main causes of death in diabetic patients: 1. The main cause of death in type 2 diabetic patients is the combination of acute heart disease, such as coronary heart disease, myocardial infarction, cerebrovascular disease, cerebral infarction or cerebral hemorrhage, all of which are relatively fatal diseases that can easily lead to death or a significant decrease in quality of life. 2, type 1 sugar disease patients die mainly because of diabetic nephropathy, renal insufficiency, uremic state, in this type of diabetic patients are more common, many patients often die from renal insufficiency, uremia resulting in secondary infection, cardiopulmonary failure, etc..