Pregnancy vomiting vomit dark brown things may be related to diet, may also be vomiting bile or upper gastrointestinal bleeding and so on caused. 1. Diet: pregnancy vomiting vomit dark brown things may be pregnant women consumed red dragon fruit, tomatoes and other dark-colored food, oxidation under the action of gastric acid to form brown substances, may also be eaten animal liver, duck blood and other food containing iron, resulting in vomit for the black-brown. Generally do not need special treatment, pay attention to observation can be. 2. Vomiting bile: If the pregnant woman vomiting symptoms are more serious, repeated vomiting after the appearance of black-brown things, it is likely that there is no food in the stomach after the performance of bile vomiting, usually appear bitter mouth discomfort. Can be served with vitamin B6 as prescribed by the doctor to stop vomiting, if necessary, need to go to the hospital to improve the infusion, to prevent the phenomenon of water electrolyte disorders. 3. Upper gastrointestinal bleeding: If the pregnant woman herself suffers from gastric diseases such as gastric ulcer, it may also be upper gastrointestinal bleeding caused by the black-brown stuff, in addition to food debris scratching the esophagus may also appear black-brown stuff. It is necessary to complete the relevant examinations to clarify the causes and then treat the symptoms. During pregnancy, pay attention to rest more, at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.