Once the allergen is identified, the patient should first try to avoid contact with it, and at the same time avoid cross-allergens with it. They should also avoid contact with other irritating odors, such as smoke, paint, strong perfume, etc. All of these factors can trigger or aggravate allergy symptoms. Hope to do the following: 1. If you are allergic to indoor dust or dust mites: you should try to keep the room clean, avoid or reduce the accumulation of dust in household items, pay attention to ventilation and dryness; avoid using carpets and furniture that tend to accumulate dust, do not play with cotton, feathers and other filled toys, mattresses and pillows are best made of synthetic materials; books should be stored in closed bookcases, old newspapers, magazines and other Old newspapers, magazines and other items that tend to accumulate dust should be moved out of the bedroom; the use of air conditioning and air filters can remove a lot of dust and other inhaled allergens. 2, if you are allergic to pollen: do not pick flowering branches; close the windows when the wind is blowing (especially at night); schedule the drying of bed sheets and bedding in the early morning, when the pollen content in the air is the lowest. 3, if you are allergic to mold: avoid damp rooms, such as basements, do not use humidifiers; indoor dust contains a lot of mold, so you can take the same measures to prevent indoor dust allergy; should avoid places where mold is easy to breed, such as leaf piles, tree trunks near the ground end, shady places or places where grass and trees flourish. 4.If you are allergic to a certain food: you must abstain from eating that food, and you should also abstain from eating all products containing that food. 5.If you are allergic to pets: It is better to ban pets at home and not to have pets around people who are often in contact with them; you should try not to use animal hair products, such as carpets and fabrics; you should also avoid contact with animals outdoors. If the above are noted and done well, then your allergy symptoms have been reduced to some extent.