Deep breathing and wanting to cough may be caused by pharyngitis, bronchial asthma, pleurisy, pneumothorax and tumors. 1. Pharyngitis: when the patient takes a deep breath, it may stimulate the mucous membrane of the throat and the symptom of wanting to cough appears. 2. Bronchial asthma: Due to the increased sensitivity of the patient’s airways, deep breathing may stimulate the airways and symptoms of wanting to cough may occur. 3. Pleurisy and pneumothorax: when patients with pleurisy and pneumothorax take a deep breath, the pleura may be involved causing reflex cough. 4. Tumor: primary tumor in the lungs or metastatic tumor in the lungs compresses the trachea and bronchus or invades into the trachea and bronchus, deep breathing may stimulate the airway, and the symptom of cough occurs. Deep breathing and coughing symptoms can also be caused by other diseases. When the symptoms of deep breathing and coughing occur repeatedly, it is recommended to go to the hospital in time, so that the cause of the disease can be clarified as soon as possible for treatment.