Urine ketone body a plus sign represents the body ketosis, clinically there are generally two conditions will cause ketosis, one is a long time without food, resulting in serious lack of energy intake in the body, the body began to break down the body fat and other energy to maintain the body needs, and finally metabolism acetone-like products increased, similar to diabetes ketosis-related syndrome is hunger ketosis. Treatment is to replenish energy, suspend the continued breakdown of body fat and other substances ketosis can be treated, there are two methods of energy replenishment, one is to eat immediately, the other can not eat intravenous rehydration infusion of glucose. The other is diabetic ketosis, diabetic patients because of insulin deficiency or insulin resistance, resulting in blood glucose metabolism disorder body can not effectively use glucose for energy metabolism, can only carry out fat decomposition to ensure the body’s energy needs, this process will produce a large number of ketone bodies, more than the liver’s metabolic capacity excess part will be excreted from the urine, resulting in urinary ketone body positive phenomenon. The presence of ketone bodies in the urine of diabetic patients is an acute complication of diabetes and needs to be treated by a doctor. Clinically, adequate insulin and fluids should be supplemented and changes in the condition should be closely observed.