What reason is there phlegm in the upper part of throat? Can you tell me something about it?

Hello, you have pharyngitis. You can use a mixture of Liushen Pill and Folium Isatidis, and Amorim can treat it.

Usually talk less, drink a little more water, eat more vegetables and fruits. If it is serious, use antibiotics, pay attention to rest and eat reasonably. I wish you a speedy recovery.