We all know that children with asthma tend to wheeze more easily in the winter when temperatures plummet, and relatively less often in the summer. But that doesn’t mean asthma doesn’t occur in the summer! Asthma attacks are closely related to environmental factors. In summer, if the air conditioner is turned on too low, the temperature difference between indoors and outdoors is large, which makes it easy for some children with poor resistance to catch upper respiratory tract infections due to cold, while the sensitive airways are frequently stimulated by heat and cold and reflexively spasm, causing coughing and shortness of breath. In addition, air conditioners that are not used for a long time may accumulate mites, dust, mold, pollen, viruses and other dirt inside, and if they are turned on without cleaning, the dirt will be blown back into the room, easily inducing asthma and allergic rhinitis. We recommend that the air conditioning temperature should not be too low, preferably at 26℃-28℃, the temperature difference between indoor and outdoor should not exceed 5℃, and children should not face the air conditioning vents. If your child falls asleep in an air-conditioned room, it is best to turn off the air conditioner after he or she is asleep and turn to natural ventilation to adjust the room temperature. Families with allergic children in the use of air conditioning every 2 weeks or so should be filter cleaning, especially the season when the air conditioner re-“on the job”, it is best to ask professionals to thoroughly clean its interior. Normally, the room where the air conditioner is used should be kept ventilated for two hours a day. For allergic diseases in children, we recommend a “four-in-one” optimal allergy treatment program, which includes 1) correct diagnosis and avoidance of allergens; 2) standardized specific immunotherapy (desensitization); 3) good patient education; and 4) appropriate use of symptomatic medications. Desensitization has been recognized by the WHO as the only allopathic treatment that can influence the pathogenesis of allergic diseases today.