The patient has phlegm as soon as he sings, and it is likely that the patient has had a recent cold. The mucous membrane of the throat is still in a state of congestion and has not fully recovered. If there is inflammation, there will be some inflammatory exudate, leading to the formation of phlegm in the patient’s throat, especially when singing, the patient may worsen such symptoms. There is also a situation where the patient often sings loudly, which is particularly likely to aggravate the patient’s vocal folds to close and rub against each other, leading to laryngitis, which triggers the formation of phlegm in the patient’s voice when he sings. It is recommended that the patient active treatment, you can consider oral sweet orange bingmei tablets to reduce the secretion of phlegm, but the patient is still the main need to silence rest, less speech, less singing, for the recovery of the patient’s disease has a very good help.