The causes of acid reflux when eating sweets include physiological factors and pathological factors such as gastric ulcer and gastroesophageal reflux disease. 1. Physiological factors: Sweets contain sugar, which can increase the secretion of gastric acid, thus leading to excessive secretion of gastric acid, i.e. acid reflux. In addition to sweets, strong tea, fried foods, spicy foods such as chili peppers, sour foods such as lemons, and alcohol are also likely to cause acid reflux. Therefore, patients with excessive gastric acid secretion should try to eat less of the above foods. 2. Pathologic factors: (1) Peptic ulcer: patients with peptic ulcer have higher than normal secretion of gastric acid, and after eating sweets, they stimulate the secretion of gastric acid, so it is easy to cause acid reflux. (2) Gastroesophageal Reflux Disease (GERD): GERD patients often suffer from acid reflux and heartburn due to the damage of the esophageal anti-reflux barrier. Sweets can relax the lower esophageal sphincter, thus making it easier for GERD patients to experience acid reflux and other symptoms. The causes of acid reflux when eating sweets are not limited to those mentioned above. If acid reflux is severe, or if the symptoms persist for several days without improvement, you should go to the hospital in time for treatment.