Preventive health care knowledge of rhinitis: 1. Quit smoking and alcohol. 2.Stay away from pets. 3.Kill cockroaches and other pests thoroughly. 4.Control the occurrence of indoor mold and mildew. 5.Enhance physical fitness is very important for allergic rhinitis patients, usually pay attention to exercise. 6.Avoid all foods that can cause allergic rhinitis attacks, be careful with fish, shrimp and crab food. 7, life should be regular, pay attention to keep warm, especially when the seasons change, clothing should be appropriate, avoid cold and other cold air stimulation. 8, do not use carpets, feather bedding, keep the room clean, hygienic, reduce indoor dust, and keep indoor ventilation, often drying clothes 9, eat more vitamin B and vitamin C and carotenoid-rich vegetables and fruits, cereals, vitamin E rich foods such as nuts, wheat germ, etc., can effectively slow down the allergy phenomenon, and can prevent the decline of immune function, can be used in the treatment of allergic rhinitis. In addition to eating more beneficial foods, there are some cool foods that should be eaten sparingly or not, such as watermelon, pear, coconut, white radish, cold drinks, etc. In addition, foods that are too greasy, too salty, too acidic or spicy should also be avoided as much as possible.