Children coughing without sputum can be seen in respiratory tract infections, cough variant asthma and other conditions, the treatment needs to be based on the cause, such as bronchopneumonia caused by Mycoplasma pneumoniae infection, need to use azithromycin and other anti-infective treatment. 1. Respiratory tract infections: such as acute bronchitis, bronchopneumonia, if considered to be caused by Mycoplasma pneumoniae infection, dry cough with little sputum may appear during the course of the disease, which may be accompanied by fever, and the perfect chest X-ray and Mycoplasma pneumoniae nucleic acid PCR may assist in the diagnosis. These children should be treated with macrolide antibacterial drugs (e.g., azithromycin) for anti-infection, and oral pulmonary cough synergist can be used to relieve cough symptoms. 2. Cough variant asthma: this disease is mainly characterized by recurrent cough, dry cough, mostly at night or after activities, etc. There may be a history of allergy, and a complete pulmonary function test can help diagnosis. Treatment can be oral leukotriene receptor antagonist, such as montelukast sodium to reduce airway responsiveness, while the use of inhaled glucocorticoids, such as budesonide nebulization and other treatments, and follow up as prescribed by the doctor. 3. Tracheal foreign body: the above phenomenon can also occur, mostly with a history of foreign body choking, the treatment needs to carry out bronchoscopic foreign body removal surgery. All of the above drugs should be used under the guidance of a physician, and it is recommended to actively seek medical advice from a specialist to guide the treatment.