The patient was a 26-year-old women, G1P0 (G: gestation, P: parturition), 38 weeks of gestation without a history of pregnancy or family history of diabetes. On May 8, 2017, she was admitted to the hospital due to 38 weeks of gestation and over 10 h of decreased fetal movement. A color Doppler ultrasonography (Soering, Germany) showed no fetal heartbeat, suggesting intrauterine stillbirth. Laboratory results showed that PG was 29.43 mM, pH was 7.172, urine glucose was 4+, urine ketone was 3+. Other parameters are shown in Table 1. She was diagnosed with DKA and intrauterine stillbirth. After admission, she was given oxygen, intravenous insulin, sodium bicarbonate, and a large amount of fluid replacement therapy.