Spitting up yellow, bitter water is usually bile and is mostly associated with gastrointestinal and liver and gallbladder disorders. Bile is a liquid secreted by the liver, with a bitter, yellowish-green flavor. Under normal circumstances, after bile secretion, part of it goes into the gallbladder first, and the other part is directly discharged into the intestinal cavity. After we eat, gastric acid in the stomach will enter the duodenum with the food and neutralize with bile, so there is little bile in the gastric juice. If yellow, bitter water comes up after vomiting, consider bile reflux, in which bile that would have been excreted into the duodenum backs up into the stomach and is vomited up with vomiting. This is usually associated with decreased gastrointestinal function, stomach or liver and gallbladder disease, in addition to nausea, vomiting and bloating. Patients who experience vomiting of bitter water should go to the hospital in time for examination and active treatment under the guidance of the doctor. In the usual diet should also pay attention to, avoid spicy, greasy and other stimulating food, eat more light and easy to digest food, chew slowly, reduce the burden on the gastrointestinal tract.