1 Minimize the temperature difference between inside and outside the nasal cavity. For example, drinking ice water suddenly in the hot sun in summer, or sneezing because of entering and leaving the air-conditioned room, is also easy to stimulate the respiratory tract and cause allergies. In winter or in the morning when the weather suddenly turns cold, before leaving the warm bed, rub your hands on your nose and mouth, or cover your nose and mouth with a warm towel when you get up, or wear a mask to let the respiratory tract slowly adjust the temperature and temperature changes. Don't be exposed to cold air immediately.

When entering an air-conditioned room or allergic place, carry a mask with you and put it on immediately. Wear a mask or scarf to cover your mouth and nose when riding a motorcycle or breathing uncomfortable cold air.

3 control the use of air conditioners at home, especially for allergic children. It is best to blow the air conditioner as little as possible. When using the air conditioner, you should always clean and replace the filter screen, often wipe the air outlet of the air conditioner, reduce the indoor furnishings, and often clean it to avoid the indoor allergens rising when the air conditioner blows.

4 Drink more hot water because the heat of the mouth will increase the temperature of the nasal cavity and reduce the chance of nasal mucosal swelling, so drinking more hot water will also help to relieve nasal allergies.