A clinical cough without sputum is a dry cough, which is seen in upper respiratory tract infections, lower respiratory tract infections, and allergic respiratory diseases. Upper respiratory tract infections, including rhinitis and pharyngitis, can occur after cold air irritation and a spicy diet and require cough suppressant medication, including codeine phosphate oral solution, codeine tablets, and cough suppressant. If the dry cough without sputum is caused by lower respiratory tract infection, you should be alert to the possibility of tuberculosis, which is characterized by cough, low sputum, hot flashes, night sweats, and even blood in the sputum, and requires standardized anti-tuberculosis treatment. If the dry cough without sputum is a respiratory allergic disease, anti-inflammatory and anti-allergic drugs can be given, including montelukast sodium, glucocorticoids, theophylline extended-release tablets, epalrestine, loratadine, etc. Glucocorticoid nebulized inhalation treatment can also be given to achieve anti-inflammatory, antispasmodic, wheezing and cough suppressant effects.