Urine routine ketone body positive is divided into physiological and pathological two cases caused by, if it is physiological is usually does not matter, if it is pathological is a critical situation. 1. It doesn’t matter: physiological factors are mostly hunger, malnutrition, etc., under the state of hunger, adipose tissue decomposition and metabolism produces ketone bodies, thus leading to ketone body positive urine routine, belonging to the normal excretion of metabolites, so it usually doesn’t matter, don’t worry about it too much. 2. Important situation: Pathological factors mainly include diabetic ketoacidosis due to poor blood sugar control, which is an acute complication of diabetes, but also a more important situation. At this time, active, rapid and effective treatment is needed, such as through rehydration, hypoglycemia and other ways to alleviate the condition. It is recommended that after the emergence of urine routine ketone body positive situation, we should promptly seek medical treatment to find out the specific causes, so as not to delay the condition.