The survival time of a 30-year-old with diabetes is related to its severity, comorbidities, individual condition, and treatment, and cannot be generalized. Diabetes can be divided into two types, type I diabetes and type II diabetes. For people with diabetes, the danger lies not in the disease itself, but in the complications caused by diabetes. Diabetes treatment modalities include health education, blood glucose monitoring, medication, diet therapy, and exercise for weight loss. If the above treatment methods are strictly adopted, reasonable diet, control the intake of starchy food and take medication on time, the blood sugar can be controlled within the normal range, which has little effect on the life expectancy of patients and can even be the same as the life expectancy of normal people. However, if a diabetic patient is combined with hypertension, kidney disease, myocardial infarction, diabetic cerebrovascular disease, etc., it may have an impact on the patient’s life expectancy and even endanger his or her life. Patients with diabetes should seek timely medical attention from the endocrinology department, and doctors will take appropriate treatment according to the disease condition. In addition, patients should pay strict attention to their diet in daily life to avoid adverse effects on blood sugar.