Early pregnancy night vomiting may be caused by pregnancy reaction, or it may be caused by inactivity after meals and poor gastrointestinal digestion. Pregnant women in about 6 weeks after pregnancy dizziness, fatigue, drowsiness, poor appetite, nausea, vomiting and other symptoms, this is the early pregnancy reaction, usually in the 12 weeks of pregnancy disappear on their own. Vomiting may be a pregnancy reaction caused by elevated human chorionic gonadotropin in the body after pregnancy, usually nausea and vomiting in the morning, but there are also cases of vomiting at night. It is also possible that during pregnancy lying in bed for a long time, gastrointestinal function is weakened and vomiting occurs. In this case, it is recommended to move moderately in the evening after meals to help digestion. If vomiting is severe during pregnancy, it is recommended to consult a doctor in the hospital to identify the cause and treat the symptoms.