If you have phlegm in your throat and can’t cough it up, you need to clarify the cause of the disease and then target treatment, such as gastroesophageal reflux disease, chronic pharyngitis, bronchitis and so on. 1. Gastroesophageal Reflux Disease (GERD): Gastric acid reflux will stimulate the throat, resulting in an increase in throat secretions, the phenomenon of sticky phlegm, you can take omeprazole to improve the reflux phenomenon. 2. Chronic pharyngitis: chronic pharyngitis due to pharyngeal inflammation stimulation, resulting in increased throat secretions, mucous phlegm, can be used to compound borax solution, furacilin liquid, 2% boric acid solution gargle, or take iodine tablets, silver and yellow tablets and so on. 3. Chronic bronchitis: bacterial infection, the patient may have a cough, coughing up phlegm symptoms, there will also be a feeling of phlegm in the throat, according to lung CT or sputum culture results to choose sensitive antibiotics anti-infective treatment, with expectorant, nebulizer and other drugs symptomatic treatment. There are many reasons for coughing up phlegm in the throat, so it is recommended that patients go to the hospital in a timely manner to improve the examination, make a clear diagnosis, and follow the doctor’s instructions for targeted treatment.