Postprandial blood glucose 26 belongs to a more serious situation, indicating that the patient’s blood glucose is in an extremely high state, which is very dangerous. It is recommended to go to the hospital immediately for examination and treatment to prevent accidents, and the treatment principles are as follows: 1. pump insulin: postprandial blood glucose 26mmol/L, you should go to the hospital immediately to give pump insulin according to the doctor’s prescription to lower the blood glucose to a relatively normal range, fasting blood glucose control to 7-8mmol/L, two hours after meal blood glucose control to 8-9mmol/L; 2. L, two hours after meal blood glucose control to 8-9mmol/L; 2. Correct nutrition: check urine ketone body immediately after arriving at the hospital to clarify whether diabetic ketosis occurs. Arterial blood should also be taken for blood gas analysis to clarify whether diabetic ketoacidosis occurs. 26mmol/L blood glucose is an emergency, which may endanger the patient’s life. If diabetic ketoacidosis occurs, a large amount of rehydration should be given to correct the water-electrolyte acid-base balance and timely application of antibiotics and insulin for treatment; 3. Treatment of infection: Patients with blood glucose 26mmol/L may also have severe infection, especially the elderly, and attention should be paid to observe whether cerebral hemorrhage, cerebral infarction, myocardial infarction and some diseases of the biliary system have occurred. Serious infection can easily cause a large amount of adrenocorticotropic hormone secretion, resulting in a rapid rise in blood sugar, and the source of infection and infection foci should be promptly controlled by surgical means; 4. Testing blood sugar again: If the blood sugar tested with blood glucose meter is at 26mmol/L, pay attention to observe whether the blood sugar test paper is within the expiration date, sometimes the blood sugar test paper expires and the blood sugar value detected is inaccurate, and the test paper should be replaced and measured again.