Sweet potato nourishes the stomach, and its rich dietary fiber can help digestion and increase appetite. However, sweet potato can promote gastric acid secretion, so people who usually have too much gastric acid and often feel acid reflux and heartburn should not eat it. Sweet potato porridge and steamed sweet potatoes are usually good choices. It is best not to eat baked sweet potatoes on the roadside, which is easy to paste and the sanitary conditions are not guaranteed.