You can eat apples when you have heartburn because apples are alkaline substances that can neutralize stomach acid and relieve heartburn symptoms. If you often have heartburn symptoms, you should give lifestyle adjustments and medication, try to reduce the intake of spicy, cold and other stimulating foods, avoid eating foods that are too sweet, too acidic and too oily, and avoid bad stimuli such as strong tea, coffee and alcohol. Do not eat too much every day, 7-8 minutes full is enough, do not lie down immediately after eating, at the same time, quit smoking and drinking, eat less and more meals, give light, easy to digest, nutritious liquid or semi-liquid food. If the symptoms of heartburn are not relieved by lifestyle adjustment, gastroscopy should be performed to clarify the cause and give a comprehensive treatment to inhibit gastric acid secretion, protect gastric mucosa and promote gastric motility, etc. Inhibiting gastric acid secretion is commonly used H2 receptor antagonists and proton pump inhibitors, proton pump inhibitors are stronger, commonly used drugs are omeprazole, pantoprazole, rabeprazole, lansoprazole and esomeprazole.