If there is a foreign body in the throat, the first thing you need to do is to go to the hospital to check the electronic laryngoscope to find out if there is a real foreign body, and if the residual foreign body is removed directly, it can be cured. If no foreign body is found, and the patient only feels a foreign body sensation, then it is considered to be pharyngeal xenophobia, which is also called plum pneumonia in Chinese medicine. The cause is usually the lymphatic follicle hyperplasia in the throat caused by chronic pharyngitis, and the friction between the lymphatic follicle and the epiglottis will lead to foreign body sensation, obstruction and tightness in the throat of the patient.