Spitting bile can cause damage to the gastric mucosa, causing gastritis, gastric ulcers, and gastric bleeding episodes. When there is blockage in the abdomen of the duodenal jug, as the emptying of food is affected, resulting in increased pressure in the duodenum, the contents of the duodenum will be regurgitated into the stomach, causing irritation to the stomach wall, and even bile vomiting will occur. Bile contains a large amount of bile salts and bile acids, which are very corrosive and can corrode the mucous membrane of the stomach wall after entering the stomach, even causing damage to the protective barrier of the gastric mucosa, so people who often vomit bile have a higher chance of developing gastritis and gastric ulcers. In case of frequent bile vomiting, long-term damage to the gastric mucosa can even lead to gastric bleeding. In case of bile vomiting, abdominal stereoscopic examination and treatment of intestinal obstruction are required to reduce the damage to the gastric mucosa.