Pneumonia one month after discharge from the hospital still have sputum need timely examination, according to the cause of treatment, such as for pneumonia use antibiotics, pharyngitis use compound chlorhexidine gargle and so on. 1. Pneumonia, if the lung CT, blood tests, etc. are conducted after the consultation, and it is clear that the pneumonia is recurrent, antibiotics such as penicillin, expectorants such as ambroxol, etc. need to be taken for comprehensive treatment. 2. Pharyngitis, if the possibility of pneumonia is excluded, it is necessary to consider whether it is pharyngitis, which requires the use of cotrimoxazole gargle, etc., and penicillin and other medicines may be needed for accompanying infections. 3. Other causes, such as smoking, need to quit smoking. Pay attention to exclude the possibility of other diseases, such as upper airway cough syndrome patients with nasal secretion reflux may appear long-term sputum, lung cancer can also lead to long-term sputum. The above drugs need to be standardized and rationally applied under the guidance of professional physicians and pharmacists. If the symptoms fail to improve or even worsen gradually, it is necessary to consult a regular hospital in time and cooperate with the doctor to improve the examination and standardized treatment.