Usually, excessive exercise does not lead to excessive gastric acid secretion. The causes of excessive gastric acid secretion include irrational diet, insufficient gastric motility, infection of pathogenic bacteria, and neuroendocrine tumors. 1. Irrational diet: such as consuming too many sweets, high-fat foods, alcohol, strong tea, coffee and other foods, as well as spicy and stimulating foods can stimulate the stomach lining, leading to excessive secretion of gastric acid. Unhealthy living habits or mental stress may lead to abnormal secretion of the vagus nerve and affect the gastric acid secretion. 2. Insufficient gastric power: insufficient gastric power or impaired gastric emptying can cause food to stay in the gastrointestinal tract for a long time, which promotes excessive secretion of gastric acid. 3. Pathogenic bacterial infection: Helicobacter pylori infection may lead to inflammation of the gastric sinus, which will increase the release of gastrin in the gastric sinus, and then contribute to the excessive secretion of gastric acid. 4. Neuroendocrine tumors: such as gastrinoma will appear excessive secretion of gastric acid. To summarize, excessive exercise does not lead to hypersecretion of gastric acid, which is usually caused by internal gastric lesions. When abdominal distension, abdominal pain, acid reflux, heartburn and other symptoms occur, it is recommended to go to the hospital in time and follow the doctor’s instructions for treatment.