Acid vomiting in the middle of the night is caused by too much stomach acid. Excessive stomach acid causes acid reflux in the middle of the night, which will lead to symptoms such as acid vomiting in the middle of the night, stomach pain and heartburn. Long-term acid vomiting will stimulate the mucous membrane of esophagus and increase the incidence of esophageal cancer. To reduce acid vomiting in the middle of the night, correcting bad personal habits is the best measure. It is necessary to avoid eating before bedtime, eat less sweet food and avoid coffee and other stimulating drinks to reduce the secretion of stomach acid. Alcohol abstinence and weight loss need to be carried out. The head can be padded when sleeping to reduce the reflux of stomach acid. Avoid sleeping on the right side of the bed to reduce acid reflux. All these can reduce the symptoms of acid vomiting in the middle of the night. If there are frequent episodes of acid vomiting in the middle of the night, or if you also have acid reflux and belching during the day, the possibility of gastric ulcer exists. If there are only occasional episodes of acid vomiting in the middle of the night, it may be related to slow gastric emptying due to improper diet. It is best to have three regular meals, balanced nutrition, a long time with the diet to regulate the spleen and stomach, drink more soup to neutralize stomach acid, do not drink strong tea tea or thick broth, usually drink some milk, millet porridge hanging noodles in the neutralization of stomach acid. If it is often occurring episodes of midnight vomiting acid, you need to go to the hospital for gastroscopy to help confirm the diagnosis, and the use of standardized drug combination therapy