Dyspnea is related to rhinitis, which causes swelling and narrowing of the upper airway, causing deficient nasal ventilation, and deficient nasal ventilation can also lead to dyspnea. Because 70% of human respiratory resistance is in the upper airway, i.e. in the nasal and pharyngeal cavities, and rhinitis causes swelling and narrowing of the nasopharyngeal cavity of the upper airway, which in turn causes obstruction of nasal ventilation. For example, when there is inflammation in the nasal cavity during a cold, the body tends to feel the lack of nasal ventilation, so nasal congestion will lead to a lack of ventilation, and the body naturally appears to open mouth breathing, manifesting itself in the form of breathing difficulties. At this time, treatment to reduce congestion of the nasal mucosa is carried out for rhinitis, i.e., by decongesting drugs, such as ephedrine, to improve the dyspnea caused by rhinitis. In case of allergic rhinitis, which also causes dyspnea, and allergic rhinitis and bronchial asthma are the same disease of the same airway, it is accompanied by bronchial asthma when dyspnea is aggravated. Therefore, the treatment should be targeted according to the correlation between dyspnea and rhinitis, as well as the condition of the lower airways.