Diabetic patients control diet is one of the important methods of disease treatment, diabetic patients should follow the doctor’s advice reasonable control of diet, in order to facilitate the control of blood glucose. Diabetes does not avoid eating may aggravate the condition, accelerate the emergence of complications, may affect the life expectancy, but the specific can live a few years is uncertain, diabetic patients need to strictly comply with medical advice to control blood sugar. Once diagnosed with diabetes, in addition to controlling the development of blood sugar through medication, but also need to cooperate with dietary control, appropriate exercise and other programs, in order to make diabetes medication to achieve good results, to avoid repeated spikes in blood sugar, resulting in diabetic nephropathy, diabetic retinopathy and other complications, which may have a very serious impact on life expectancy. Diabetic patients should have strict dietary control on a daily basis, calculate the total calories of food intake per day, and pay attention to the nutritional balance of the diet in three meals a day. Proper dietary control can delay the onset of diabetic complications and prolong survival. It is recommended that diabetic patients consult a medical professional to formulate an individualized diet plan and monitor blood glucose changes.