Usually a patient’s blood glucose of 25.0 mmol/L is more serious, indicating that the patient’s glucose metabolism is in a significantly disturbed state, and acute complications of diabetes such as diabetic ketoacidosis and hyperglycemic hyperosmolar state may occur. If the patient has acute complications, symptomatic treatment should be carried out, and the cause of the above situation should be further treated after the symptoms are controlled. I. Symptomatic treatment: 1. Correction of ketoacidosis: If a patient develops diabetic ketoacidosis, a large amount of fluids should be infused, and the principle of infusion is first fast and then slow, while the rate of infusion should be decided under the guidance of the doctor according to the patient’s heart condition and age. The doctor will give the right amount of insulin, which can control the blood sugar below 16.0 mmol/L in a short time. In addition, the patient’s electrolyte disturbance will be corrected to avoid hypokalemia. Acidosis is mainly caused by acidic metabolites in ketone bodies. After infusion and insulin treatment, the level of ketone bodies decreases and acidosis can be gradually corrected by itself; 2. Correction of hyperglycemic hyperosmolar state: mainly seen in elderly diabetic patients, it is mostly advocated to treat with isotonic solution at the beginning of treatment, because a large amount of input of isotonic solution will not cause hemolysis, which is conducive to restoring blood volume, correcting shock, improving renal blood flow and restoring renal regulation When the blood glucose drops to 16.7mmol/L, glucose solution and insulin will be input to help patients correct the hyperglycemic hyperosmolar state. If the blood sugar 25.0mmol/L is mostly caused by infection, the cause of infection should be investigated, if it is bacterial infection, the doctor will give cephalosporin and other corresponding antibiotics for treatment, if it is caused by fungal infection, the doctor will give ketoconazole, miconazole and other antifungal drugs for treatment; 2. is caused by poor control of diet and medication, and the above situation does not occur, patients should also go to the hospital for re-evaluation. Diet should be controlled in moderation, less food with high salt, high sugar, high oil and high protein, more dietary fiber-rich grains and cereals, and if basal insulin is lacking, basal insulin supplementation should be given. Patients with high blood glucose are recommended to monitor blood glucose regularly to understand the changes of blood glucose, and if abnormalities such as increased blood glucose occur, they should be treated in time to avoid adverse events such as acute complications of diabetes. Besides, in daily life, patients are advised to increase exercises such as running and skipping rope appropriately, which can control blood sugar in a stable state to a certain extent.