Prevention Tips: 1. Clear allergens, stay away from dust mites, pollen, mold, pet hair and other allergens Mite Removal Methods: Spring and fall are the two peak densities of dust mite populations, with higher densities in the fall than in the spring. Air-conditioned rooms can reproduce year-round, and bedroom bedding and carpets are the most suitable breeding grounds for dust mites. The bedroom should be kept neat, hygienic and dust-free, well-lit, with windows frequently opened to keep the air fresh and avoid humidity; secondly, as little furniture as possible should be placed indoors. Apply easy-to-clean flooring materials, such as wood and stone, no carpets, no padded or plush toys. Bedding is best to use anti-mite material products,, bedding, pillows, clothes, curtains, etc. wash and dry regularly; expose and pat out the dust, dander and mites in beds and bedding; scald with >55℃ hot water every 10 days or so, 100℃ hot water can denature allergenic proteins. Use air purifiers, vacuum cleaners, etc. that have filters. Tree pollen begins in mid-March and peaks from April to June, the main allergenic pollen is elm, poplar, willow, etc.; grass pollen begins in late July and peaks from August to September, the main allergenic pollen is Artemisia, Gramineae, etc. After identifying allergens, try to reduce outdoor activities during this period, wear glasses and masks when possible if unavoidable, and take a shower when you get home. If indoors, take care to close windows and use air conditioners with air cleaning filters. To control the occurrence of indoor mold and mildew, first of all, keep the room dry and ventilated, avoid long-term darkness and humidity, throw away clothes with mildew as soon as possible, and store food reasonably to prevent mildew. If mold is found indoors, immediately disinfect with bleach. Do not keep animal pets with fur, existing pets must be placed outside the house or bedroom, and often give pets a bath. The home should be thoroughly cleaned regularly to eliminate cockroaches. 2, keep the environment air clean Pay attention to the clean air of the living environment, avoid contact with dust and chemical gases, especially harmful gases. Do not smoke indoors and avoid taking your children to public places where smoking takes place. Usually, you should try to avoid inhaling irritating gases, etc. Reduce the stimulation of cold air on the nasal mucosa, pay attention to wear a mask when appropriate. 3.Life and living Actively exercise, pay attention to the combination of work and rest, through exercise, can make the blood circulation improve, the blood flow in the nasal turbinates will not be blocked. Keep a cheerful mood. Usually, you can take some measures to improve the blood circulation of the nose, such as hot water compresses for the nose and frontal face or local heating with a hairdryer, which can help to improve the symptoms. The first thing you need to do is to take care of yourself, not to stay up all night on the Internet. Exercise from childhood little baby wash face with cold water, so that the skin is often stimulated to increase local blood circulation and keep the nasal cavity ventilated. 4, diet Keep a balanced nutrition, eat more fresh fruits and vegetables containing vitamin C and vitamin A, such as apples, bok choy, spinach, carrots, etc.; eat less spicy and fried foods, such as chili, beef and mutton, cookies, fried dough, biscuits, fast food noodles, etc.. Also avoid seafood, fish, shrimp, crab and other foods that you may be allergic to. 5.Actively prevent and control acute respiratory diseases: avoid triggering allergic rhinitis attacks, regular influenza vaccination. 6.Change the bad habit of picking your nose. 7.Cautiously use ephedrine, nasal drops, BITON, furosemide nasal drops and other nasal mucosal constrictors: especially do not use for a long time (no more than 7 days). 8.Take medication and immunotherapy under the guidance of doctor.