Dry cough in children can be seen in physiological phenomena, pathological conditions (such as cough variant asthma), there is no method to cure the best, according to the cause of the appropriate treatment, such as cough variant need to be regular nebulizer treatment. 1. Physiological phenomena: when children encounter cold air, irritating odors or in a passive smoking environment, dry cough phenomenon, such children need to avoid such stimuli, if necessary, wear a mask. 2. Pathologic conditions: (1) Cough variant asthma: these children may have recurrent cough, mostly dry cough, easy to appear at night, in the morning, or activities, the treatment needs to use inhaled glucocorticosteroids (such as budesonide) nebulization, direct action on the airway mucosa to play a local anti-inflammatory effect, oral leukotriene receptor antagonist (such as menglustat) and other treatments, and follow up according to the doctor’s instructions. (2) Respiratory tract infections: acute bronchitis and bronchopneumonia caused by Mycoplasma pneumoniae infection may present with dry cough in the early stage of the disease, often accompanied by fever. Azithromycin should be given as anti-infective treatment, and oral pulmonary cough synergist and other symptomatic supportive treatment can be given. The above medications should be used under the supervision of a physician, and it is recommended to consult a specialist for treatment.