The causes of coughing in children include the following: firstly, it is caused by very dry sputum, which is sometimes very little after respiratory tract infection, especially dry cough in autumn and winter, which can lead to coughing inability due to dry respiratory tract. In this case, saline nebulization and airway humidification can be carried out in time. After applying saline for airway humidification, most of the symptoms that cannot be coughed out can be significantly relieved. Secondly, it is caused by acute bronchial asthma. After suffering from acute bronchial asthma, the airway spasm is often very obvious, and then there is often the symptom of not being able to cough out, and it is accompanied by obvious chest tightness. Children can be treated with bronchodilators, such as procaterol, in a timely manner.