Acute fatty liver of pregnancy (AFLP) is a rare but life-threatening complication occurring in the third trimester. It is often fatal to both mother and fetus. This case is a 31-year-old pregnant woman with twins who developed loss of appetite, nausea and vomiting, right upper quadrant pain and jaundice before 37 weeks of gestation, followed by fetal distress and needed to be delivered as soon as possi-ble. Two male babies were successfully delivered by emergency caesarean section and the patient was transferred to the intensive care unit after delivery. Based on clinical symptoms, gestational weeks, and laboratory data, acute fatty liver of pregnancy was diagnosed by excluding related diseases and applying Swansea criteria evaluation. After providing supportive treatments, the liver function gradu-ally returned to normal, and the condition was stable, and the patient was then discharged. Therefore, once acute fatty liver of pregnancy is highly suspected or established, the pregnancy must be terminat-ed as soon as possible to avoid the sudden aggravation of the condition and lead to further liver failure, so as to reduce further complications and mortality rates.