Clinically, if a pregnant woman vomits or even vomits blood during pregnancy, she should go to the hospital in time to check whether the mucous membrane is ruptured and bleeding, in addition, you can do routine urine examination to rule out ketoacidosis. The estrogen in the body will increase thousands of times in early pregnancy, which will lead to nausea and vomiting. If the vomiting is more serious, resulting in bleeding capillary rupture in the esophagus, there will be vomiting blood. In this case, it is recommended to go to the hospital for examination to find out whether the capillary rupture and bleeding is caused by vomiting or the gastric mucosa itself is ruptured and bleeding. If the bleeding is caused by chronic erosive gastritis or gastric ulcer, active treatment should be given. Urinalysis can also be done to see if ketoacidosis is present. If there is ketoacidosis, or electrolyte disorders, prompt antiemetic, nutritional support, and active correction of electrolyte disorders are necessary, otherwise the fetus will be jeopardized.