If nausea and regurgitation occur in late pregnancy, if it is sudden, the first thing to consider is that it is caused by improper diet, such as consuming too much greasy food or eating unhygienic food can cause a burden to the stomach and intestines, and nausea and regurgitation will occur. If the symptoms are mild, they can generally be relieved by themselves; if the symptoms are not relieved and may even be aggravated, it is recommended that pregnant women immediately seek medical attention and be treated with medication under the guidance of a doctor. Secondly, nausea and regurgitation in pregnant women may be caused by gastroesophageal reflux. Due to the gradual increase of the fetus, the intra-abdominal pressure of pregnant women increases, and the pressure in the stomach cavity will increase after the stomach is compressed, leading to indigestion and gastrointestinal adverse reactions, and reflux may even occur when the pressure in the esophagus is exceeded. In addition, the progesterone in the body will change during pregnancy, making the lower esophageal sphincter relaxed, and the stomach contents will easily reflux into the esophagus, and gastroesophageal reflux will also easily occur. Then, if a pregnant woman suffers from hypertension during pregnancy, digestive system diseases, liver diseases, anemia, etc., nausea may also occur. At this time, a clear diagnosis is needed and corresponding treatment measures should be taken: 1. hypertension in pregnancy: if there is nausea and regurgitation in late pregnancy, in addition to dizziness, consider that it may be nausea and regurgitation caused by hypertension in pregnancy, pregnant women need to go to the hospital in time and under the guidance of the doctor to lower the pressure to avoid danger to the fetus in the womb; 2. anemia: because of the demand for iron in the body in late pregnancy is relatively Large, prone to iron deficiency anemia, which can cause nausea and regurgitation, and may be accompanied by weakness, shortness of breath and other symptoms. It is recommended that pregnant women adjust their diet, eat some animal liver, lean meat, etc. If necessary, oral ferrous sulfate oral solution can be taken under the guidance of a doctor for supplemental treatment; 3, digestive system diseases: late pregnancy with cholecystitis, pancreatitis and other digestive problems can also cause nausea and regurgitation, usually also have abdominal pain performance, it is recommended that pregnant women go to the hospital in a timely manner for relevant testing, symptomatic treatment; 4, liver diseases. For example, fatal acute fatty liver, which is unique to late pregnancy, is relatively rare and has a more acute and insidious onset, with only mild nausea and retching, vomiting, weakness, epigastric pain or headache at the beginning, with jaundice appearing a few days to a week later, and progressive aggravation, usually accompanied by proteinuria and edema, once suspected, need to seek medical attention as soon as possible.