As a common respiratory symptom, dry cough without sputum can be effectively relieved by medication, but because there are many causes of dry cough, such as respiratory mycoplasma infection and bronchial tumor, etc., in addition to using medication to quickly relieve the symptoms of dry cough, it is also necessary to treat according to the cause and take a comprehensive treatment approach to effectively control the condition. 1. medication: commonly used medications include dextromethorphan The drugs can relieve the airway spasm, thus reducing the symptoms of dry cough; 2, respiratory support therapy: common are nasal catheter oxygen, face mask oxygen, etc., which are suitable for relieving the symptoms of dyspnea and hypoxemia caused by persistent dry cough; through respiratory support, the airway can be kept open and hypoxemia can be relieved; 3, treatment of primary diseases: acute upper respiratory tract infection, bronchiectasis, pleurisy, Patients are advised to go to the hospital for relevant examinations to clarify the cause and then develop a more specific treatment plan. During the treatment period, patients should follow the doctor’s prescriptions and closely observe the changes in their condition; arrange the diet reasonably, pay attention to keeping warm, take regular rest, do physical exercise in an appropriate amount, and maintain a good state of mind.