There are often two reasons for a daily cough: one is cough variant asthma; the other is chronic bronchitis. Chronic bronchitis is often a long-term cough and sputum, often heavy in the winter and spring, and can be diagnosed with a CT of the chest. In the case of cough variant asthma, the bronchodilator test or bronchial excitation test is often positive, and the sudden onset of an irritating dry cough is more common. In the case of cough variant asthma, long-term treatment with nebulized inhalation medications, such as budesonide and terbutaline, is required. In the case of adults, you can inhale Symbicort directly to relieve the symptoms of daily cough. In addition, it is best to chew a chewable tablet of montelukast sodium before going to bed, which can also relieve the symptoms of coughing. In the case of chronic bronchitis, anti-inflammatory treatment with appropriate antibiotics is often required in the acute phase based on the results of sputum culture, as well as the use of cough and phlegm-relieving drugs, such as Ambroxol Hydrochloride.