Excessive secretion of gastric acid leads to stomach pain, which is usually caused by excessive diet, mental stress, chronic gastritis and other reasons, and can be treated by life therapy and medication. 1. Eating too much: After eating a lot of food, stomach acid is secreted in large quantities, which stimulates the gastric mucosa and causes stomach pain. Life treatment can be used, such as adjusting the degree of eating, to avoid eating too much. 2. Mental tension: mental tension excites the vagus nerve and stimulates the secretion of gastric acid, resulting in damage to the gastric mucosa and stomach pain. It can be treated with medication, taking acid-suppressing drugs such as omeprazole and lansoprazole. 3. Chronic gastritis: Chronic gastritis will lead to excessive secretion of gastric acid, stimulate the gastric mucosa, stomach pain. Life treatment can be used, such as regular, light diet, avoid spicy stimulating food, less alcohol, less coffee, etc.. Drug treatment can also be used, such as taking acid-suppressing drugs such as lansoprazole and omeprazole, and gastric mucosal protectants such as aluminum thiosulfate. Excessive secretion of gastric acid can also be caused by other reasons, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to clarify the cause of the disease, targeted treatment. Avoid self-medication, so as not to delay the condition.