Don't eat spicy food. If you want to avoid stomach acid and heartburn, you should first pay attention to your daily diet, avoid eating too fast, and try to eat less or not to eat certain foods, such as tea, coffee, fried food and candy. Eat more alkaline foods such as soda crackers and burnt bread, and drink more black tea and apples. For severe hyperacidity, you can make soup with ginger and Pu 'er tea.