If you vomit acidic water, the most likely cause is gastritis or gastric ulcer, because these stomach diseases can lead to the secretion of large amounts of gastric acid, the symptoms of acid reflux, you need to take drugs to inhibit the secretion of gastric acid such as omeprazole, rabeprazole, etc. under the guidance of a gastroenterologist to treat, you can also use drugs such as Daxil magnesium aluminum carbonate to neutralize gastric acid. Reflux esophagitis can also occur due to reflux of gastric contents into the mouth or pharynx, and can also be similar to water spitting, often accompanied by a burning sensation behind the sternum, and is recommended to be treated with acid suppressants, gastric power drugs such as pendolitone. If the brain is in a state of long-term tension, it will make the gastric juice secretion imbalance, resulting in excessive secretion of acid and vomiting, it is recommended to adjust the state of mind, keep a relaxed mood.