Sinusitis-bronchitis syndrome in children is a group of conditions that have both paranasal sinusitis and bronchitis or pneumonia, and that have some causal relationship. It is more common in pediatrics, but is often neglected by pediatricians, and only in recent years has it been taken seriously by pediatricians, accounting for 20-40% of respiratory tract infections according to relevant surveys. Clinical manifestations are as follows: 1. Atopic and genetically related children have a history of eczema, allergic rhinitis, and recurrent respiratory infections. Parents have a history of allergic rhinitis, sinusitis, urticaria, bronchitis, asthma; 2, repeated nasal discharge, nasal congestion, open mouth breathing at night, morning clear throat cough partly accompanied by headache and dizziness infants and children often have capillary bronchitis wheezing bronchitis; 3, most of the paranasal sinus area has pressure pain, tonsillitis or adenoid hypertrophy, pharyngeal wall cobblestone-like changes; 4, X-ray and sinus CT support Paranasal sinusitis, bronchitis, pneumonia changes; laboratory tests suggest an increase in total leukocyte count, not high or only neutrophilia in case of infection. Some see eosinophilia pathogenic examination may have dysbiosis or viral infection. Treatment is currently taken for three months with five-combination therapy cephalosporin antibiotics plus macrolide antibiotics; hormonal inhalation aerosols or nasal inhalers; leukotriene antagonists (montelukast, zalalust); histamine inhibitors (loratadine); and Chinese medicine, along with symptomatic management and supportive therapy.