Spitting yellow water is considered to be bile reflux, which may be caused by bile reflux gastritis, acute enteritis, pregnancy, etc. Treatment can be taken to protect the gastric mucosa, relieve stomach cramps, antiemetic medications and so on. 1. Bile reflux gastritis: the duodenal contents containing bile reflux into the stomach, causing inflammation of the gastric mucosa, with symptoms such as abdominal distension, nausea, vomiting of bile, belching, heartburn and acid reflux, etc. For treatment, the gastric mucosa should be protected and gastric motility should be promoted, and the commonly used medicines are magnesium alumina carbonate, bismuth potassium citrate and domperidone. 2. Acute enteritis: bacterial and viral infections trigger acute inflammation of the intestinal tract, manifested by abdominal pain and diarrhea, loss of appetite, nausea and vomiting, etc., and some of them can vomit a small amount of bile, and antibiotics, probiotics, and medicines for relieving gastrointestinal tract spasm can be used in the treatment, commonly used drugs include azithromycin, bifidobacterium triplex capsules, scopolamine, etc. 3. pregnancy: pregnancy reaction, there may be vomiting bile, you can supplement vitamins to stop vomiting, drink more warm saline water, replenish water. There may be other reasons for vomiting yellow water, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment. The above medication should be used under the guidance of a doctor.