Blood glucose HI here should refer to the blood glucose meter HI, which is the abbreviation of HIGH, suggesting that the patient’s blood glucose is too high, beyond the range that can be detected by the blood glucose meter, and the use of the blood glucose meter can’t monitor the patient’s blood glucose, which can be considered as a critical value. Insulin injections are usually given for treatment. The administration of intravenous insulin can lead to a gradual decrease in blood glucose, and at the same time, a large amount of fluid supplementation, maintenance of electrolyte balance, correction of acidosis as well as plasma hypertonicity. When insulin is administered intravenously, blood glucose ranges need to be checked regularly to avoid hypoglycemia. Guidance on diabetic diet and exercise can be given accordingly so that blood glucose is under control over a long period of time. In the case of blood glucose HI, it is recommended to go to the hospital in time for diagnosis and treatment to avoid the adverse consequences caused by high blood glucose.