There are several reasons why a child may have difficulty breathing and cannot get air: 1. The most common cause is severe pneumonia, because viral, bacterial, mycoplasma, chlamydia and other infections cause lung lesions, and when severe, breathing difficulties can occur. 2. If the child has a previous history of asthma, an acute asthma attack can occur when triggered by certain factors. 3. Pay attention to acute laryngitis caused by infection, which causes laryngeal edema and leads to 4, If the child has a history of foreign body inhalation can also occur. 5, Serious infection can cause intracranial infection, when involved in the child’s respiratory center will lead to irregular breathing, breathing difficulties, can not get on the air.