Cough is mainly caused by inflammation of the respiratory tract that irritates the mucous membrane of the respiratory tract, or by allergy or asthma that affects the dilation of the bronchi, and requires treatment with bronchodilators and also inhaled glucocorticoid-like drugs. Commonly used medications are budesonide spray, salbutamol spray, and also ipratropium bromide. In more severe cases, a combination of bronchodilators and inhaled glucocorticoids may also be used. If the condition is due to severe bronchitis or caused by pneumonia, active treatment with effective oral antibacterial drugs is also required. It is necessary to pay attention to drink more water and eat more fresh vegetables and fruits, which can provide relief. Nebulizer inhalation with tranylcypromine can also be used to dilute the sputum, which can also promote the discharge of sputum and help the cough to improve.