Vomiting for two days in a row is mainly considered to be caused by gastrointestinal diseases, liver disease or kidney disease, but central diseases, myocardial infarction, pneumonia and systemic diseases can not be ruled out, it is recommended to consult a doctor in time. 1. Gastrointestinal diseases: continuous vomiting is usually caused by digestive diseases, such as duodenal ulcer or pyloric ulcer, which may be accompanied by pyloric obstruction, in which case there will be recurrent vomiting, usually after meals, and there may be hangover in the vomit, which should be treated in time with surgical procedures to relieve the obstruction. 2. Liver disease: patients with hepatitis and acute liver damage may experience nausea and vomiting after eating greasy food, and usually accompanied by a feeling of fatigue, in which case they should go to the gastroenterology department in time, and use some antiviral and liver-protecting drugs. 3. Kidney disease: diabetic patients with serious signs of complications such as acidosis and high glucose will experience repeated nausea and vomiting, and need to go to the nephrology department in time for treatment. When there is continuous vomiting for two days repeatedly without relief, it is recommended to consult a doctor for a clear diagnosis and further treatment under the guidance of the doctor.