Eating full stomach acid is usually associated with reflux esophagitis, gastric ulcer, and gastric prolapse. When the stomach is full, food stimulates the gastric glands to secrete large amounts of gastric acid to facilitate digestion of food. When the sphincter in the cardia area is relaxed at the same time, gastric acid may reflux into the esophagus and violate the mucous membrane of the esophagus, thus causing sensations such as acid reflux and burning pain in the stomach. In patients with gastric ulcer, after a period of time after eating, there is an excessive secretion of gastric acid, which can invade the gastric mucosa and cause spasmodic contraction of the gastric lining, resulting in not only pain but also acid reflux. Some people will have hypogastric prolapse, and these people should avoid excessive satiety. The symptoms of hypogastric prolapse will be more serious when the patient is full, and it will even cause the peristaltic function of the stomach to be impaired, which will not only cause indigestion, but also gastric acid reflux.