Children coughing in the morning may be caused by respiratory dryness, allergic rhinitis, upper respiratory tract infections and other reasons. 1. Respiratory dryness: some people sleep with their mouths open at night, dry air is not moisturized through the nasal cavity, through the mouth directly into the respiratory tract, the respiratory mucosa will become drier, and in the morning after getting up due to dryness triggered by coughing. 2. Allergic rhinitis: children themselves have allergic rhinitis, sleep at night when the nasal secretion backflow, stimulate the throat, the morning after getting up there will be coughing symptoms. 3. Upper respiratory tract infection: small children by bacteria, viral invasion triggered by upper respiratory tract infection, respiratory mucosa congestion, edema, inflammatory secretions exudate, these substances stimulate the respiratory mucosa, the morning will also appear coughing symptoms. Children may also have other reasons for coughing in the morning, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.