It is also common to have a cough that is strong when lying down and relieved when sitting up. First of all, the cause of most coughs is the occurrence of respiratory system infection, and when respiratory system infection occurs, the mucous membrane of the respiratory tract will secrete a large amount of inflammatory exudate to block the respiratory tract, and the coughing phenomenon will easily occur at this time. When lying down, the bronchial tree becomes more horizontal, and the pressure of the surrounding lung tissue on the bronchial trachea is enhanced, so the airway becomes relatively narrow, and with the influence of secretions, it is easy to have a strong cough. Targeted anti-inflammatory treatment for infections is more effective and can effectively reduce respiratory secretions and relieve cough symptoms, such as antibiotics, such as ceftriaxone and cefoperazone, for bacterial infections, and ribavirin for antiviral treatment for viral infections. In addition, there are some people with coughing, possibly caused by cardiogenic asthma, when lying down the amount of returning blood will increase, easily leading to the occurrence of pulmonary stasis, will also appear lying down coughing powerful phenomenon.