Frequent coughing after smoking cessation in COPD may be related to the chronic obstructive pulmonary condition or recent co-infections. 1. Frequent coughing after smoking cessation is mainly considered to be caused by a history of chronic obstructive pulmonary disease (COPD) due to the presence of COPD. Since the typical symptoms of COPD are coughing up sputum, shortness of breath, wheezing, chest tightness, etc., frequent coughing may occur even if the patient fails to quit smoking. 2. Do not rule out the possibility of recent combined infection, can also cause frequent cough performance, mainly refers to the lung infection, can be due to infection damage to the trachea and bronchial mucosa, frequent cough performance. It is necessary to check in time to make it clear. It is recommended to consult a doctor in a timely manner, after examination to clarify the condition, and at the same time under the guidance of the doctor’s treatment.