Common causes of cold throat include environmental irritation, chronic pharyngitis, postnasal drip syndrome, reflux pharyngitis and so on. 1. Stimulation of environmental factors: If you eat cold drinks and ice cream or inhale cold wind, it will cause cold throat. Long-term smoking and staying up late can also cause throat tightness and cold symptoms. 2. Chronic pharyngitis: long-term inflammation of the mucous membrane of the throat, the local blood circulation is affected, there is a cold throat. In addition, chronic pharyngitis local mucous membrane air heating function is not good, will also feel the throat cold. 3. Postnasal drip syndrome: suffering from various types of rhinitis, sinusitis, deviated septum, etc., when there is postnasal drip that is, nasal secretions through the nasopharynx to the pharynx, stimulate the mucous membrane of the pharynx, the feeling of cold. 4. Reflux pharyngitis: gastric reflux to the throat, stimulate the local inflammatory reaction, gland secretion reduction, mucosal dryness may appear throat cold feeling. The cold throat symptoms persist, it is recommended to actively seek medical attention to do a systematic examination to clarify the diagnosis, and targeted treatment.