There are many causes of phlegm in the throat, such as laryngitis, postnasal drip syndrome, gastroesophageal reflux disease, etc. General treatment or medication can be chosen according to the cause. 1. Laryngitis: acute and chronic inflammation of the mucous membrane of the throat caused by long-term smoking and environmental stimulation. Smoking should be quit and detached from the environment of long-term stimulation; gargle with borax solution at regular intervals to promote the discharge of phlegm, and if there is bacterial infection, antibiotics such as penicillin can be used for treatment. 2. Postnasal drip syndrome: it refers to the secretion of nasal cavity or sinus caused by various etiologies, backflow to the pharynx, stimulate the mucous membrane of the pharynx, resulting in long-term phlegm in the throat. Should be timely treatment of the primary disease, control of nasal inflammation, such as nasal inhalation glucocorticoids to relieve nasal inflammation, while the use of anti-infective drugs, such as bacterial infections can be amoxicillin and other treatments for infectious diseases of the nose. 3. Gastroesophageal reflux disease (GERD): long-term reflux of gastric acid and gastric contents stimulates the throat, causing inflammation of the throat, resulting in long-term white sputum. It is recommended to use drugs to inhibit gastric acid, such as omeprazole, etc.; as well as gastric stimulants, such as domperidone and other treatment. In short, when you have a lot of phlegm in your throat, you should go to the hospital in time to get a clear diagnosis, be treated under the guidance of your doctor, and follow the doctor’s instructions for medication.