Without a cold, coughing with phlegm is an inflammatory change at this time when the mucous membrane of the respiratory tract becomes congested and edematous due to various reasons, and a large amount of inflammatory secretions exude, commonly caused by bronchitis and pneumonia. It is necessary to drink more warm boiled water appropriately, inhale deeply and cough out the phlegm with force. You can also take appropriate expectorant medicines, such as orange red phlegm cough solution, snake bile and Sichuan shellfish solution, carboxymesterol oral solution, and aminoglutethimide syrup. Use budesonide nebulizer solution and chymotrypsin nebulizer inhalation to dilute the sputum and promote its expulsion. Test blood routine, take X-ray of both lungs to clarify the cause and condition, anti-pathogen treatment, such as anti-bacterial can choose to use amoxicillin clavulanic acid potassium, meloxicillin, cefaclor and other drugs for treatment.