There is always white sputum in the throat of patients, mainly considering three aspects. First, the patient may suffer from chronic bronchitis and cough up white phlegm all the year round, which is mainly related to the patient's frequent and heavy smoking. Second, the situation of acute laryngitis or acute tonsillitis, due to mucosal congestion or edema, sputum often oozes, and the patient's foreign body sensation is particularly obvious. Third, the main considerations are chronic pharyngitis and chronic pharyngitis. The main clinical symptom is that patients always feel that there is phlegm in their throat, and they can't swallow it if they can't cough it up. Moreover, when patients eat too spicy and irritating food and too salty food, the secretion of these sputum will increase, which will lead to an increase in foreign body sensation. Therefore, if there has been white sputum in clinic, it is best to go to the hospital for a detailed examination, make clear the specific cause, and then further symptomatic treatment.