Heartburn and acid reflux are related to diet, age, and stomach diseases. Long-term poor living and eating habits lead to acid reflux and heartburn in the stomach. Dietary intake of gas-producing foods such as potatoes and groundnuts, strong tea, chocolate, and foods containing sugar and high starch can cause an increase in stomach acid and manifestations of heartburn and acid reflux. With the increase of age, many elderly people are prone to the phenomenon of reduced digestive system function, and they are especially careful when eating, but acid reflux and heartburn will still appear from time to time, especially when the weather becomes cold, the meal is slightly cold, and the symptoms of heartburn will appear when eating poorly digested food. In addition, when the human body has gastritis, gastroesophageal reflux, gastric tumors and other diseases, the reduced contraction function of the sphincter muscle can also cause food reflux, resulting in heartburn and other manifestations.