Ming is 2 years old and coughs a lot, sometimes with a sibilant sound when he breathes out. The last 2 days he has had a little fever and coughing again. Today, he suddenly had a coughing fit at night with a sibilant wheezing sound and could not lie down to sleep. After carrying him around the house for 2 hours, Xiao Ming still didn’t fall asleep and his cough got worse, with his mouth turning blue and his nostrils fanning out. Mom and dad rushed to take him to the hospital. The doctor said that Xiao Ming had asthma. The doctor said that he usually coughs a lot and hissing sound is a sign of asthma attack, so he should see a child asthma specialist as soon as possible. The doctor will give him a rule-based treatment plan. If he had not been seen, the asthma attack would have gotten worse, and a severe attack like this one is very dangerous and sometimes even life-threatening. Xiao Ming was saved and the doctor suggested that children with the following conditions should visit an asthma specialist as soon as possible: 1. wheezing, which is a sibilant, sharp sound when breathing out, especially in children with allergies such as eczema, allergic rhinitis, allergic conjunctivitis, urticaria, drug allergies and food allergies. 2.Coughing for more than 1 month continuously and the effect of antibiotic treatment is not satisfactory. 3.Recurrent cough that does not heal. 4.Coughing and wheezing easily after exercise, weather changes, and in the evening. 5.Frequent colds, runny nose, sneezing, itchy nose, itchy eyes.