Gastric acid reflux may erode the teeth, leading to symptoms such as acidity and tooth sensitivity, which can have an effect on the teeth. Gastric reflux is the reflux of stomach contents into the mouth through the esophagus. It may be caused by improper diet, abnormal esophageal dynamics, inflammation of the upper gastrointestinal tract, upper gastrointestinal tract tumors, etc. It may lead to symptoms such as heartburn and increase of acidic substances in the mouth. Frequent reflux of acid into the mouth may corrode the teeth, leading to symptoms such as tooth acidity and tooth sensitivity. If the symptoms of acid reflux can be timely to the hospital, under the guidance of the physician to carry out the relevant treatment, usually to develop good eating habits, eating should not be too fast, you can eat small meals, do not lie down immediately after the meal, to reduce the reflux of the situation, the diet should be light and nutritious, less spicy and stimulating food, quit smoking and limit the alcohol, appropriate exercise, regular work and rest.