The child has a tickling throat, cough for how long, whether it is accompanied by fever, chest tightness, shortness of breath, nasal congestion, runny nose and other symptoms, whether there is any previous history of allergic rhinitis, and whether it has been treated before. If the effect is poor after treatment, it is recommended to perform chest X-ray, routine blood test, and exhaled breath nitric oxide test. If no significant abnormalities are seen in chest X-ray and blood routine, and the index of exhaled nitric oxide is elevated, spasm of airway and hyperreactive state are considered. It is recommended to take oral montelukast sodium and nebulized budesonide aerosol to relieve the spasm of airway. Diet, a light diet, less spicy and stimulating food, and avoid the child’s exposure to irritating odors such as oil and smoke.