If the symptoms of vomiting blood appear in early pregnancy, it is recommended to consult a specialist as soon as possible to identify the cause and treat the symptoms. There are several reasons for vomiting blood in early pregnancy: first, previous gastric disorders, such as gastritis, gastric ulcer, etc. Due to the early pregnancy reaction, repeated nausea and vomiting will lead to gastric mucosa congestion, edema, erosion, and then hemorrhage and vomiting blood. Secondly, due to the early pregnancy reaction is more obvious, vomiting is too intense will lead to esophageal rupture, thus vomiting blood. Thirdly, it is due to dehydration of the body. Due to repeated and continuous vomiting, body fluids will be lost along with it, which will eventually lead to vomiting of bile pigment and blood. Fourth, high blood pressure during pregnancy is also related to vomiting blood.