Ketone bodies are the products of lipolysis. Ketone bodies include acetoacetic acid, β-hydroxybutyric acid and acetone. When the blood sugar of diabetic patients rises significantly, a large amount of glucose is excreted in the urine, and the carbohydrates available to the body are reduced, and only lipolysis can be carried out to supply energy. Ketone bodies are very acidic substances, and when ketone bodies accumulate in large amounts, diabetic ketosis, or even diabetic ketoacidosis, will result. Diabetic ketoacidosis is a common acute complication in diabetic patients that can endanger the patient’s life and requires aggressive treatment. Normal people will also undergo lipolysis and produce ketone bodies when there is insufficient energy supply such as starvation, and starvation ketosis can also occur in severe cases, and ketoacidosis also needs to be actively rescued to avoid serious metabolic disorders.