There is always phlegm sticking in the throat and can not be spat out, it may be caused by rhinitis, chronic pharyngitis, penile syndrome, chronic bronchitis, reflux pharyngitis, neurosis and other reasons. 1. Rhinitis: chronic inflammatory lesions of the nasal mucosa caused by repeated exposure to allergens and infections for a long period of time, the oozing inflammatory substances reflux into the oropharynx, so this symptom will appear. 2. Chronic pharyngitis: chronic inflammatory reaction of the pharyngeal mucosa leads to lymphoid follicular hyperplasia in the posterior wall of the pharynx, so this symptom will appear. 3. Stromal Syndrome: congenital developmental abnormality causes the stroma to be too long, the stroma extends abnormally, the stromal morphology is abnormal, etc., which produces pressure and stimulation to the surrounding muscles, blood vessels, nerves, mucous membranes and other tissues, and so the symptom occurs. 4. Chronic bronchitis: long-term recurrent bronchial infections appear airway inflammatory lesions, resulting in coughing, coughing up phlegm, shortness of breath and other symptoms, phlegm is constantly produced and discharged to the throat, so it feels like there is always phlegm sticking in the throat and spitting. 5. Reflux pharyngolaryngitis: gastric acid refluxes into the throat through the esophagus, irritating the mucous membrane of the throat and causing this symptom. 6. Neurosis: There is no organic lesion, but the subjective feeling is abnormal due to mental stimulation and psychological factors. There is always phlegm sticking in the throat, which may be related to a variety of factors, and it is recommended to consult a doctor for a clear diagnosis.