Chronic pharyngitis is a very common disease in otolaryngology, with many specific causes that are not singular. Its causes are mainly related to lifestyle habits, diet, and some secondary and primary diseases. Common causes include smoking, alcohol consumption, consumption of spicy and irritating food, staying up late, high psychological stress, and significant emotional fluctuations, all of which can lead to chronic pharyngitis. Another cause is secondary pharyngitis, which results from primary diseases such as chronic rhinitis and sinusitis. Due to the long-term backflow of nasal discharge, which flows back into the throat and irritates the mucous membrane, a chronic inflammatory response is produced. This is also a common cause of chronic pharyngitis. Furthermore, there is reflux pharyngitis, which is also a type of chronic pharyngitis. Some people have stomach diseases and reflux esophagitis, where long-term acid reflux leads to damage in the mucous membranes of the throat, causing chronic inflammation with symptoms such as a foreign body sensation, burning sensation, and throat dryness. Therefore, there are many causes of chronic pharyngitis, including both primary and secondary reasons. A specific diagnosis needs to be made by a doctor based on a thorough medical history and physical examination.