When people who lose weight are uncomfortable, doctors will recommend a routine urine test to clarify the value of urinary ketones and control the weight loss progress. Since diet control is required for weight loss, if the diet is not properly controlled, it is easy to cause metabolic disorders in the organism, thus producing ketone bodies, which can be excreted through the urine and manifested as urinary ketones. The main components of ketone bodies are acetone, β-hydroxybutyric acid and acetoacetic acid. If the body accumulates a large amount of ketone bodies will cause disorders in the body, liver and heart damage, and also cause changes in the state of consciousness. In more serious cases, the body may develop ketoacidosis, which may lead to significant impairment of the patient’s cardiac function and even endanger life. The more urinary ketone bodies are added, the greater the risk of ketoacidosis. Since most patients with ketosis are the result of overly strict dietary control, if they are adding a lot of exercise, it is easy to develop hypoglycemia, etc. Therefore, it is recommended that during weight loss, do not blindly diet, exercise also needs to be moderate, healthy weight loss, and avoid taking the wrong approach to weight loss, increasing the risk of ketoacidosis.