The morning stomach acid vomiting acid is due to excessive secretion of stomach acid at night, a large number of accumulation in the stomach caused by chronic gastritis, gastroesophageal reflux, pregnancy reaction, etc., the specific causes and treatment: 1, chronic gastritis: can have epigastric discomfort, acid reflux, burning pain and other symptoms, should promptly go to the hospital to do gastroscopy and carbon 13 or carbon 14 breath test to confirm the diagnosis, drug treatment available acid suppressants and mucosal protective agents, the quadruple therapy to eradicate H. pylori. If necessary, H. pylori should be eradicated by quadruple therapy. Diet pay attention to diversification, supplementation of nutrients, less pickled, smoked and other foods with high nitrite content, to ensure adequate rest and sleep; 2, gastroesophageal reflux: cardia sphincter relaxation will make the cardia can not be normal to stop acid reflux, so that acid reflux to the stomach and esophagus, resulting in early stomach acid vomiting, heartburn phenomenon. It is recommended that a gastroscopy and 24-hour reflux test be done at the gastroenterology department to confirm the diagnosis. In daily life, pay attention to avoid lying down immediately after eating as much as possible, you can exercise properly and avoid eating foods that may induce reflux, such as coffee and chocolate. Treatment can be carried out with acid suppressants and gastrointestinal motility drugs, etc. If the drug control is not good, laparoscopic fundoplication can be chosen; 3. Pregnancy reaction of pregnant women: After pregnancy, due to the increase of estrogen and progesterone, it leads to the relaxation of the pyloric sphincter of the stomach, resulting in excessive secretion of gastric acid and symptoms of acid reflux and heartburn. You can drink soda water or eat soda crackers to neutralize stomach acid, and avoid overeating and eating greasy and irritating food. If acid reflux is serious, try to avoid medication. You can exercise moderately to promote gastrointestinal peristalsis and relieve the symptoms of acid reflux caused by indigestion.