The phlegm inside the patient’s throat is triggered by inflammatory exudation from the mucous membranes in the throat. If the patient has phlegm every day, it means that the patient is likely to have chronic pharyngolaryngitis, which may be related to the patient’s special love of spicy things or especially sweet, irritating odor of food. Patients need to be adjusted from the diet, try to eat light food, at the same time can not stay up late, do not smoke, drink alcohol, drugs can be applied to the fat sea water or lily of the valley soak water to drink, can effectively play the role of phlegm. Patients can also use dexamethasone injection to do nebulized inhalation therapy, can also effectively reduce the formation of phlegm, active symptomatic treatment, the patient’s symptoms will improve.