Pregnant women with urine ketone bodies (+) are considered to be starvation ketone bodies, because after pregnancy most pregnant women will have pregnancy reactions, manifested as nausea, vomiting, reduced appetite, significantly reduced food intake, pregnant women are in a long-term starvation state, so ketone bodies (+) will appear in the urine, but also pay attention to testing whether the pregnant woman’s blood sugar is normal, to exclude diabetes-induced positive urine ketone bodies. Starvation ketone bodies suggest that pregnant women should eat less and more meals, increase the amount of food eaten, so that the amount of urine of pregnant women will increase, and if necessary, infusion treatment should be given to avoid aggravation of water-electrolyte disorders and acidosis, which will affect the development of the fetus and also affect the physical health of pregnant women.