Pregnant women vomiting yellow bitter water may be related to pregnancy vomiting, but it may also be caused by acute gastroenteritis, biliary tract diseases and other reasons. 1. Gestational vomiting: in early pregnancy due to the rapid growth of human chorionic gonadotropin and progesterone, leading to nausea, vomiting and other symptoms in pregnant women. When the number of vomiting too much, vomiting more serious, will lead to pregnant women vomiting yellow bitter water symptoms, is the more common pregnancy vomiting. 2. Acute gastroenteritis: acute gastroenteritis caused by irregular diets or overeating may cause severe vomiting in pregnant women, leading to the phenomenon of vomiting yellow bitter water. 3. Biliary tract diseases: If a pregnant woman suffers from acute cholecystitis, acute gallstones and other biliary tract diseases, repeated nausea, vomiting and other symptoms, which can also lead to the phenomenon of pregnancy vomiting vomiting yellow bitter water, abdominal pain, jaundice and other symptoms may occur. Clinically, when pregnant women vomit yellow bitter water symptoms, can promptly go to the hospital, clear diagnosis under the guidance of the doctor for standardized treatment.