Green nasal discharge with cough may be caused by colds, rhinitis, chronic sinusitis and other reasons. 1. Colds: Colds with secondary bacterial infections are likely to cause green nasal discharge, and coughing itself is a common symptom of colds. Coughing is a common symptom of colds. In addition, colds that are not accompanied by bacterial infections may also cause green nasal discharge. If the bacterial infection is secondary, it is recommended to use antibiotic drugs for treatment, such as cefixime, roxithromycin and so on. 2. Rhinitis: severe allergic rhinitis may lead to yellow-green nasal discharge, in addition to atrophic rhinitis can cause green crusty nasal discharge. The irritation of nasal secretion on the throat may trigger cough. 3. Chronic sinusitis: Chronic sinusitis can lead to symptoms of green nasal discharge, and the affected side of the nasal congestion, nasal secretion reflux but pharyngeal cavity can cause coughing, phlegm and other uncomfortable symptoms. If accompanied by nasal polyps, it is recommended to choose timely surgical removal of nasal polyps for treatment. There are many causes of green nasal discharge with cough, and treatment options vary significantly from disease to disease, so individuals who experience this unusual symptom are advised to seek medical attention to identify the cause of the condition.