The phenomenon that phlegm cannot be coughed up in the throat is often caused by thick phlegm, so the use of phlegm-eliminating drugs to help dilute the phlegm can effectively relieve this symptom. First of all, it is recommended to drink more water, which can help dilute the phlegm. Secondly, you can use phlegmolytic drugs, such as amiloride oral solution or amiloride hydrochloride, which can promote the secretion of large amounts of plasma by the cup cells of the respiratory tract mucosa, which can help dilute the phlegm and thus can promote the coughing up of phlegm. Finally, anti-inflammatory drugs are needed, which can help dilute sputum while anti-inflammatory. For example, bacterial infections are often yellow and sticky sputum, and oral antibiotics, such as cefixime, are needed. If it is a viral infection, you can take oral anti-inflammatory treatment with Pudilan Oral Liquid. In addition to oral medication, you can also use nebulizer to nebulize and inhale Ambroxol Hydrochloride for phlegm treatment, the effect is also very good.