Currently, many diabetic patients believe that they have diabetes and high blood glucose and cannot be given glucose infusion. In clinical work, patients often ask, “Doctor, I have diabetes, why do you give me glucose? So, can a diabetic patient get a glucose infusion or not? Diabetes is a disease caused by the absolute or relative lack of insulin, thus causing an increase in blood glucose. It is because of this characteristic of diabetes that glucose solution is generally not chosen in the clinical medication process in order to avoid excessive intake of glucose by diabetic patients, but it is not absolutely impossible to infuse glucose. 1, diabetic patients for some reason hypoglycemia such as: the application of insulin, irregular diet, etc.; 2, diabetic patients for various reasons can not eat on their own or be required to eat and water fasting such as: surgery, coma state requires resuscitation; 3, the use of special drugs, some drugs need to use glucose solution as a lysis medium drugs: such as cardiovascular medicine commonly used anti-arrhythmic drugs (amiodarone), the use of Sodium chloride solution will aggravate the occurrence of phlebitis; 4, when diabetes combined with other organ insufficiency: such as cardiac insufficiency to minimize sodium intake to avoid aggravating the burden on the heart; then need glucose as a soluble medium for infusion; renal insufficiency, the infusion of saline can cause hyperchloremic metabolic acidosis, when also need glucose as a soluble medium for infusion; 5, prevention of hypoglycemia: diabetic ketoacidosis During the treatment, when the blood glucose will reach 13.9mmol/L, it is necessary to change to glucose solution to prevent the occurrence of hypoglycemia. Although diabetic patients can use glucose infusion in special cases, how to prevent the increase of blood sugar caused by the infusion? Insulin can be added to the glucose infusion is appropriate. The addition of insulin to glucose solution is not a simple chemical neutralization, but the use of insulin to regulate glucose metabolism, promote the uptake and utilization of glucose by the liver, bones and adipose tissue, and promote the conversion of glucose into glycogen for storage in the muscle and liver. Therefore, it is not impossible to infuse glucose in diabetic patients with elevated blood glucose, only that it should not be consumed in excess, and as long as it is used correctly, it is beneficial to the patient and will not have a great impact on blood glucose.