People with excessive stomach acid should not eat foods that are too sweet and more acidic, as well as tobacco, alcohol, coffee, and stimulating foods. 1. Too sweet and too acidic food: such as cakes, or sweeter drinks, vinegar, plums, oranges, hawthorns and so on. 2. Tobacco, alcohol and coffee: Long-term smoking, drinking and coffee can lead to stomach acid, acid reflux, and even cause reflux esophagitis. 3. Stimulating food: For example, raw onion, chili, leek, raw garlic and other stimulating food can lead to increased secretion of stomach acid, which can aggravate stomach acid. Stomach acid patients try not to eat too sweet, too acidic, stimulating foods, as well as tobacco, alcohol, coffee and so on. You can eat soda crackers appropriately to relieve stomach acid. Patients with high stomach acid should actively seek medical treatment, and should be treated for the cause of the disease.