The discomfort of the stomach always spitting white foam in the stomach may be related to indigestion, reflux esophagitis and food poisoning. 1. Indigestion: because of the gastric power disorder, it will lead to epigastric pain, often about half an hour after eating a persistent hidden pain, which can be accompanied by spitting white foam, insomnia, depression and other symptoms. 2. Reflux esophagitis: excessive secretion of gastric acid, resulting in acid reflux, white foam vomiting, burning sensation behind the sternum or under the raphe and other symptoms. 3. Food poisoning: Consumption of spoiled or unclean food leads to food poisoning, mild abdominal pain and diarrhea, and in severe cases, it will lead to spitting white foam. The cause of stomach discomfort is always vomiting white foam in the stomach may also be somatization disorder and other physical and mental illnesses, it is recommended to go to the regular hospital in a timely manner, clear the cause of the disease, targeted treatment under the guidance of the doctor, so as not to delay the condition.