Diabetes, if left unchecked, can cause serious complications that can affect the life and health of the patient, but there is no exact time point in clinical practice as to how long one can live. The danger of diabetes does not lie in the disease itself, but in the complications caused by diabetes, such as diabetic foot, diabetic nephropathy, diabetic cardiovascular disease and so on. The above complications can seriously affect the life and health of patients, and the prognosis of discomfort is very obvious. Diabetic patients should pay strict attention to their daily diet and control the intake of starchy substances to keep their blood sugar within a reasonable range. Patients should take a combination of diet control, reasonable exercise, and medication to strictly control blood sugar. Specific medication, i.e., guidance program, needs to be decided by the doctor according to the needs of the disease. Diabetic patients must pay strict attention to diet control, and only by controlling their mouths can they add to the effective control of blood sugar.