There are many causes of yellowing in late pregnancy that require further examination to clarify. These include malnutrition, severe anemia, acute severe viral hepatitis, intrahepatic cholestasis during pregnancy, liver damage due to other causes during pregnancy, and acute fatty liver during pregnancy can cause jaundice. In this case, further blood tests, liver function and hepatobiliary ultrasound should be performed to clarify whether there are elevations of bilirubin and transaminases. If you have previous viral diseases such as hepatitis B, you should also check the DNA of the hepatitis B virus to see if there is a significant increase in the number of viruses, so that further treatment can be given in a timely manner. Acute fatty liver during pregnancy is mainly characterized by jaundice and gastrointestinal symptoms, and in case of acute fatty liver the condition is more serious and needs to be treated urgently.