I. Prevention of outdoor allergens Outdoor activities should be limited as much as possible. Avoid contact with flowers or decaying leaves, willow wadding, poplar wadding, etc. As far as possible, you can wear a mask when you go out, or you can go to a seaside city where there are fewer allergens to live. Prevention of pet allergens Stay away from pets. Do not touch or feed pets. Animal hair mostly does not cause allergies, while animal dander, saliva and protein in urine are likely to cause allergy symptoms. 1.For allergic patients, the best way is not to contact, or contact as little as possible. 2, if you must have a pet, it is best to spend some time with other small animals first, to determine whether there is an allergic reaction to it, or feed animals without fur, such as turtles, fish, etc. 3, regularly clean the animal, you can ask someone without allergic diseases to bathe on your behalf. Clean the animal’s cage. Allergens can be present in the animal’s cage even months after the animal is moved out.