Diabetic ketoacidosis is usually correctable with aggressive treatment such as insulin, and blood glucose can be controlled within the normal range, but diabetes cannot be eradicated. Diabetic ketoacidosis is an acute complication of diabetes that requires immediate medical attention. It is common in type 1 diabetes, and can also occur in patients with type 2 diabetes when triggered by infection, surgery, or discontinuation of medication. Once diabetic ketoacidosis occurs, active treatment is required, after active rehydration, insulin hypoglycemia, eliminating triggers, and correcting electrolyte disorders, most patients can be successfully treated, but not excepting some very serious cases will die. Therefore, the treatment of diabetic ketoacidosis is a comprehensive treatment, not only the use of insulin to reduce glucose, the treatment should pay attention to the monitoring of blood glucose after the improvement of the treatment, in order to prevent the recurrence of ketoacidosis. Prompt medical attention is recommended when abnormal blood glucose levels are detected.