There is no specific study on the average life expectancy of diabetic complications, which is mainly based on the severity of the patient’s diabetic complications and blood glucose control. 1. The severity of diabetic complications: complications occurring in diabetes, if they lead to coronary atherosclerotic heart disease, myocardial infarction occurs, it may be a direct threat to life, resulting in a significantly shorter life expectancy. Diabetic patients with peripheral nerve damage, diabetic retinopathy, will seriously affect the quality of life. 2. Blood glucose control: Good blood glucose control is associated with relatively slower development of complications to a lesser extent, while poor control of blood glucose level is associated with relatively severe degree of complications, which may shorten life span. When blood glucose levels appear significantly elevated, it can lead to diabetic patients to develop diabetic ketoacidosis, diabetic hyperosmolar coma and life-threatening. Diabetic patients are mainly adhering to diet, exercise, medication, regular blood glucose monitoring, and participation in health education seminars, etc., in order to make a difference in life expectancy. It is recommended to standardize treatment under the guidance of a doctor to delay the development of diabetic complications.