Gastric acid reflux after waking up in the morning refers to more saliva in the mouth in the morning, the saliva is acidic, this situation is common in patients with gastroesophageal reflux disease or reflux gastritis, may be related to the following factors: First, more obese people, many obese people, especially patients with more obvious abdominal obesity, may cause the abdominal diaphragm to lift up, resulting in increased abdominal pressure, will appear obvious gastroesophageal reflux Performance, will lead to the stomach contents, including bile and gastric acid, through the lower esophageal pancreatic sphincter reflux into the esophagus, and even into the mouth, so there may be the phenomenon of acid reflux in the morning. Secondly, improper diet may be consumed at night, such as eating too much fatty food before going to bed, drinking a lot of wine, and eating more acidic food, such as carbonated drinks, or even sweets, which may lead to a large amount of undigested gastric contents after waking up in the morning and reflux into the esophagus or even the mouth, causing the phenomenon of acid reflux in the morning. Therefore, if you always wake up with acid reflux in the morning, you should consider that it is related to your diet, sleep at night, etc. It is recommended to perform necessary gastroscopy as well as healthy diet and lifestyle adjustments.