If the urine ketone body (+-), it is recommended to improve the blood ketone body and blood glucose examination. If the blood ketone body is high and the blood glucose is also significantly elevated, it suggests that the patient has diabetic ketosis, and the blood gas examination can be improved to see if there is acidosis, which is usually seen in diabetic patients whose blood glucose is not well controlled or who do not apply glucose-lowering drugs on time, resulting in significantly elevated blood glucose and significantly elevated blood ketone body in the body, thus resulting in urinary ketone body (+-). Intravenous rehydration and intravenous application of insulin are recommended for glucose-lowering and ketone-eliminating treatment. If the blood glucose is low and the urine ketone body (+-) is low, it indicates the presence of starvation ketosis, and the patient should be advised to eat in time to replenish energy, so that the urine ketone body will also turn negative.