The common causes of blockage below the laryngeal node include reflux pharyngitis, epiglottis cyst and laryngeal cancer and hypopharyngeal cancer. 1. Reflux pharyngitis: the reflux of stomach contents into the throat will cause irritation and damage to the mucous membrane of the throat, resulting in localized mucous membrane edema and causing the symptom of blockage in the throat. 2. Epiglottis cyst: it is a cystic swelling formed by the obstruction of mucous gland ducts of epiglottis mucosa, resulting in mucous retention, mostly occurring in epiglottis valley, epiglottis lingual surface and epiglottis free edge, which causes the feeling of blockage in the throat. 3. Laryngeal cancer: malignant tumor of larynx and hypopharynx will lead to thickening of local mucous membrane and formation of lumps, which will cause blockage and other symptoms. If the feeling of blockage continues to aggravate, it is necessary to consult a doctor in time and carry out standardized diagnosis and treatment under the guidance of clinicians.