1. Adjust the mentality, pay attention to rest, and avoid excessive anxiety and fatigue; 2. Quit smoking and drinking, eat regularly, and don't overdo it; 3. Avoid irritating food, such as coffee, strong tea, peppers, etc. 4. Eat less sweet and sour foods and fruits, such as chocolate, ice cream, apples and oranges; 5. Eat less foods that are prone to flatulence, such as sweet potatoes with high starch content.