If a pregnant woman vomits blood during pregnancy vomiting, it is recommended to go to the hospital promptly for treatment. Usually mild pregnancy vomiting will not lead to blood vomiting. It may be that the pregnancy vomiting is more severe and the repeated vomiting has caused some irritation to the stomach, causing bleeding in the gastric mucosa. It is also possible that stomach acid refluxed into the esophagus and burned the capillaries of the esophagus, causing capillary rupture and vomiting blood. In early pregnancy, prolonged nausea and vomiting damage the capillaries of the stomach and esophagus, resulting in vomiting blood. Usually the amount of vomiting blood is not much, usually a small amount of blood or blood shreds mixed in the vomit, it is recommended to go to the hospital for treatment in time. If the vomiting is particularly severe, you cannot eat or drink, and you lose weight, it may cause electrolyte disorders and positive urine ketone bodies, which may affect the normal development of the fetus, so you need to follow the doctor’s prescription for rehydration and nutrition treatment or take medication to relieve nausea and vomiting. More blood vomiting may have serious consequences and may lead to hospitalization if necessary. Fasting and water fasting can be done according to the doctor’s requirements, and relevant tests can be completed. After the symptoms are relieved, you can eat a small amount of light and easily digestible liquid food. In addition to early pregnancy reaction, vomiting blood during pregnancy may also be caused by other diseases, such as severe liver disease and stomach disease. No matter which is the case, you need to go to the hospital for examination first to clarify the cause and then treat the symptoms.