1. Pay attention to the combination of work and rest to prevent colds, and stay in bed at the acute stage.

2. People who are often exposed to dust or chemical gases should wear masks, masks and other protective measures.

3. Usually drink more light salt boiled water, eat digestible food, and keep the stool unobstructed.

4. Avoid smoking, alcohol, spicy, cold and overheated irritating food.

Pay attention to oral hygiene and develop the habit of gargling after meals, so that germs are not easy to breed.

6. Foods such as winter amaranth, honey, tomato, carambola, lemon, olive, kelp, radish, sesame, raw pear, water chestnut, cogongrass rhizome, sugar cane, etc. It has the functions of clearing away heat and annealing, nourishing lung and kidney yin, and can be properly selected.

7. Keep indoor air circulation.

8. Don't talk for a long time and don't shout at the top of your lungs.