The presence of ketone bodies in urine indicates an increase in fat metabolism and excessive ketone body content in the human body, which is commonly seen in diabetic patients with poor blood sugar control, who often experience dizziness and weakness, drowsiness, coma and difficulty in breathing. In addition, ketone bodies in urine are also seen in long-term weight loss and starvation. Long-term starvation can easily lead to excessive fat consumption in the body, and too many metabolized ketone bodies cannot be consumed by themselves, resulting in constant discharge from the urine, timely replenishment of carbohydrates can alleviate clinical symptoms and avoid life-threatening conditions, which are also likely to occur in people with poor kidney metabolism.