The phlegm in the throat may be caused by laryngitis or postnasal drip syndrome, which can be treated with general therapy, medication, and surgery. There is no such thing as “how to do the simplest thing with phlegm in the throat”. 1. laryngitis: laryngitis has a clear sense of foreign body in the throat, often feel phlegm in the throat, can not swallow, can not spit out. You can use clear throat tablets, grass coral tablets, etc., you can also take oral scutellaria oral solution and other symptomatic treatment. You should pay attention to your health and avoid catching colds. 2. Postnasal drip syndrome: refers to the nasal cavity, sinus in the chronic inflammation state, the inflammation part of the purulent secretion produced by the nasal cavity backflow, through the nostrils into the nasopharynx, thus triggering the throat with phlegm discomfort. If it is sinusitis, you can take clarithromycin orally to fight infection. Sinusitis with structural abnormalities can be treated with surgery under the evaluation of a specialist. There may be other causes of phlegm in the throat, so it is recommended that you visit a hospital and have a complete examination to determine the cause of the problem and then give targeted treatment or therapy. Any medication should be prescribed by a doctor.