Plum kernel gas is a term used in Chinese medicine, which usually describes a foreign body sensation in the pharyngeal cavity, like a plum kernel blocking the pharynx, not being able to cough, not being able to swallow, and sometimes stopping as the main manifestation of the disease. From the perspective of Western medicine, plum pits, also known as pharyngeal heterosensitivity syndrome, refers to the abnormal sensory syndrome of the pharynx, which can be caused by a variety of causes, including chronic pharyngitis and other organic pathologies, such as rhinitis, tonsillitis, other digestive system diseases can cause pharyngeal heterosensitivity syndrome.