The vomiting of yellow water is generally considered to be caused by bile reflux. There are many reasons for vomiting and yellow water, common reasons include pregnancy, poisoning, disease factors, etc. 1, pregnancy: women of childbearing age vomiting yellow water does not exclude pregnancy-related, after pregnancy, some women will appear early pregnancy reaction, can appear frequent vomiting, if vomiting too many times may cause vomiting yellow water; 2, poisoning: a variety of different degrees of food poisoning can lead to vomiting and yellow water. Alcohol poisoning, drug poisoning, including macrolides, may also lead to vomiting and yellow water performance because of their gastrointestinal dynamics; 3, disease factors: if patients have disease factors, such as acute gastritis, cholecystitis, gallstones, pancreatitis, intestinal obstruction, acute gastroenteritis and other digestive system diseases, can lead to different degrees of vomiting and yellow water; or central diseases resulting in cranial hypertension and The vomiting and yellow water may be accompanied by other symptoms. After vomiting yellow water, patients should go to the gastroenterology department in time to identify the cause and carry out treatment. Patients with severe vomiting should also be hydrated in time to avoid dehydration and electrolyte disorders, and take drugs to inhibit gastric acid secretion and protect the gastric mucosa for improvement under the guidance of doctors.