Mucous phlegm in the throat is usually seen in acute pharyngitis or chronic pharyngitis, postnasal drip syndrome. It is recommended to go to the ENT department of the hospital in time to get a clear diagnosis and follow the doctor’s instructions for treatment. 1. Acute pharyngolaryngitis: acute onset, often manifested as mucous phlegm in the throat, cough, sore throat, etc., can be accompanied by back and leg pain, headache, etc.. Symptomatic treatment, such as watermelon cream tablets, silver and yellow tablets, such as the combination of viral infections can be oral ribavirin and other antiviral therapy, combined with bacterial infections can be applied to antimicrobial drugs such as penicillin, etc., with a history of allergic to the drug is prohibited. 2. Chronic pharyngolaryngitis: most of them are caused by repeated episodes of acute pharyngolaryngitis, sinusitis, gastroesophageal reflux, which can be manifested as mucous sputum in the pharynx, pharyngeal foreign body sensation, coughing and so on. Boric acid solution can be used for treatment. At the same time need to treat the cause, such as sinusitis patients applying hormone nasal sprays, mucus drainage agents, gastroesophageal reflux patients need to apply acid-suppressing drugs. 3. Postnasal drip syndrome: a kind of nasal diseases caused by secretion backflow to the back of the nose and throat, such as common cold, allergic rhinitis, vasomotor rhinitis. It manifests as a syndrome mainly characterized by coughing. Treatment is mainly directed at the primary disease. Mucous phlegm in the throat should seek medical attention in time and follow the doctor’s instructions for treatment to avoid delaying the condition.