Common causes of cough with phlegm in adults include acute rhinitis, reflux pharyngitis and acute simple pharyngitis. 1. Acute rhinitis: reflux of secretions can cause cough with phlegm. Nasal sprays such as ephedrine can be used to contract the nasal mucosa to reduce nasal secretion. Hormonal nasal sprays such as budesonide nasal spray can be used locally to control the local inflammation of nasal cavity. If you have throat discomfort, you can take tablets to treat it and reduce the swelling of the throat, and there are iodine throat tablets and watermelon cream tablets. 2. Reflux pharyngitis: Oral omeprazole, rabeprazole and other drugs to inhibit gastric acid secretion, reduce gastric acid stimulation of the mucous membrane of the throat. In addition, you can take mosapride and other gastric stimulants to promote the discharge of gastric contents. 3. Acute simple pharyngitis: gargle with compound borax solution; apply antiviral medicines, such as viral azole, acyclovir, etc.; oral watermelon cream throat tablets, iodine throat tablets, etc.; take Golden Voice Pills, Six Shen Pills, Throat Pain Relief Pills, etc. Can also be used 1% to 3% iodized glycerin, 2% silver nitrate coated with swollen lymphoid follicles in the posterior pharyngeal wall, with anti-inflammatory effect. It is recommended that the patient consult a doctor in time to check the cause of cough with phlegm, clear diagnosis and etiology, and then follow the doctor’s instructions to standardize.