The constant presence of phlegm in the throat is clinically called postnasal drip syndrome. Its main consideration is inflammation of the nasal cavity as well as the nasopharynx, resulting in increased secretions appearing phlegm. If rhinitis and sinusitis are considered, its treatment can be oral rhinitis medicine Cang Euricha Rhinitis Drip Pills or Nasal Yuan Shu Oral Liquid, and nose spray medicine Fu Shu Liang or Nei Shu Na. If the inflammation is relieved, the secretion is reduced and the phlegm will be reduced at this time. If its recurrent inflammation of the adenoids, at this time you can consider taking oral amoxicillin capsules or cefradine capsules with the nasal spray drug cozulan. If the inflammation is recurrent, adenoidectomy may be considered.